Hello everyone I'm new here (just registered on Lowyat.NET in fact), so pardon me for my ignorance especially with the forum's unspoken rules.

I've gone through Starting Strength for awhile back then (before doing SS, I was just like every other clueless but passionate biceps-curling guys in the gym for about a year    ), and I'm now training on my own 4days-split (Deadlift, Squat, Bench Press and Press are the main focuses on each day).

This is what I heard:
1) If you have more muscles, it's easier for you to lose fat due to the higher BMR (as a result of having more lean mass)
2) If you bulk from a lower BF %, the mass you gain has more quality (as in gaining more muscles and less fat on a caloric surplus) compared to bulking from a higher BF % (I'm not sure how true is no.2)
3) To have a good physique in the long run I need to have a good foundation of strength

3 of these theories aren't contradicting with each other by themselves of course. However, it makes it hard for me to decide whether or not to continue bulking.
I'm currently still pursuing for more weights on the bar(refer to no.3), so naturally it should make sense for me to be in a caloric surplus. The problem now is that my BF % has obviously increased throughout these periods of strength training, especially visible on the belly (I started out skinny fat 40kg and have never seen my abs before).

I am 55.5kg (or a little higher since I've not been measuring for awhile) now, with very tiny girly bone frame.

These are my current main lifting numbers (5rep max)
Deadlift - 102.5kg
Squat - 72.5kg
Bench Press - 50kg
Overhead Press - 38.5kg

So my question is, should I just continue what I'm doing until I have a certain level of size and strength? Or is no.2 true and I should lower my BF % 1st to gain quality mass? It'd be hard for me to increase/maintain my lifts if I'm in a caloric deficit state. Tell me your opinion and what you think about the 3 rules I mentioned above.

My height is around 166cm. I had eating disorder during puberty so I have very thin and light bones.

This is how I looked like when I was in form 4 (16year-old). I started exercising after I felt heart pain (didn't dare to go for medical check up though) and muscles twitches so please don't hate, I started way below where everyone else did. In the beginning I couldn't do 1 push up or climb up the stairs without panting.
I'm now approaching 20year-old, hoping to make a change.

As for my diet, I'm not tempted to eat anything dirty like junk food/McD. My staple food are eggs, meat (fish/chicken/pork), rice/brown rice, some vege and fruits, olives, low fat/fresh milk, peanut butter, bread, tuna etc etc... Of course I'm still far from perfect in dieting but at the very least I don't eat no shit (unless my parents force me to in some cases).
The only supplements I take are Dymatize elite whey, Dymatize BCAA complex 5050 and Fish Oil.

As for my rest/recovery, I have very severe insomnia since puberty started and I have a very irregular sleeping pattern (still trying to fix it). I try to get around 8hours of sleep per day but it's sort of irregular and broken into parts.

Please answer the questions of my 1st post but feel free to ask me if you need more info to figure things out. Thanks 

I'm not sure if I'm still skinny (cause I can see the belly), I have really thick legs, glutes and traps, but my show-off muscles (chest and arms) are quite small compared to other gym goers who are not even as strong as I am. Also I do have some bicep curls and tricep extension in my training routine, and I understand that they should not substitute the place of my important main lifts.

As for my form yes I'm pretty sure it's fine (straight posterior chain and all that). I watch a lot of lifting videos on Youtube especially form big channels like Omarisuf and Johnnie Candito (P.S I hate Mike Chang he's a total fraud) and I know what good form is (I also read T-Nation articles whenever available). I once started to round my back a little so I began doing paused DL which fixed the problem altogether. When I DL heavy the ppl in my gym will stare at me cause powerlifting moves is not a thing there (bicep curling is) and also I look small. The staff even though I'd break their floor doing DL =.= Btw I do my DL barefoot now (somewhat shorter range of motion).

And I know what is IIFYM, will definitely check the dirty food thread out 
I usually eat dirty when I'm socializing (don't wanna be a b**** here). I personally don't get tempted easily by delicious but "dirty" food by now so I won't consider it a torment. My family eat things like Maggi on a daily basis though so they think I'm insane.
Thanks for your insights !

u guys know how to use spoiler?

Well, I'm halfway into my cutting phase. I never really had problems being lean but it's my first time trying to shred. As in really shred. I'll post up a progress shot in 2-3 weeks time.

Keeping strength up is important on a cut. Pulled a 435lbs x 4 deadlift yesterday.

Lol, if you know what I eat on a cut, what you label junk is nothing. 5'8" 67.8kg, less than 9%bf. probably lower but I'd rather overestimate than underestimate to keep my expectations high.
Yes, pick up heavy shit, put it down. Repeat.
Thanks for putting up a steroid induced freakshow pic up there as a fine example to all the newbies here. Don't get you.

bro seriously waffles is on your cut diet? i can die knowing i just don't have the gift of hyperbolic metabolism edi.