My answer based on experience of using 16gb on previous devices

1. U will be surprised on how many GB it takes to store your photos.. many times the photos is the one that took all ur space. Better get a higher cap for photos... my phone only got 1 game and i always have issues with OTA update since my cap is not enough

2. No. But OTA update would required at least 4-6gb available storage. But this easily solved by updating via iTunes.

nope.. the actual update is about 900+mb, but if use OTA, they will required u to have a bout 4-5GB space available. But if use iTunes, no problem. Just download, and install.

Enough, once full, just backup the photos to your external storage

1. depends.. normally when apple first launch a new OS, it will have at least 2-3 minor updates to get the os stable. I would say 1 year, u expect 4-5 times of updates, although not all are major, most of it just to fix bugs

2. 16gb? depending of the size of the apps/games and the amount of photos...

1. Updates tend to happen about three times a year?

2. I don't think so, unless you transfer your pics out or only take pics during special occasions

It all depends on how much data (pictures, songs, videos, apps, games etc) you are going to bring over to the iphone 6. If you check your current iphone 5 or 5s for how much space left, it would be similar to what you have on the iphone6/ 6+ when you restore your data to the new phone.
Updates would depend on how frequent Apple needs to patch up its latesr ios. I would say with the 8, its been pretty frequent. We are on 3rd update since ios 8 was introduced.

Let me upload my Spigen case so you'll know why 
Give me a minute.

don't you think the screen is too big ? hahaha. that's just my personal view. 
yupp. and do u think can i stick with the iPon 6 or 6 plus for 3 years or more ? since i'm a student. can't afford to change every year even the new is the most interesting phone. 
---
hmm the battery capacity. and the screen is different. yes 
but what is the OIS camera ? 
don't both camera come with the same megapixel or what..hmm. correct me if i wrong thanks   

lol. if there is not much different maybe i will go for iPon 6.
ahaaaa 

i am still torn between gold or silver color, any suggestion???

how bout grey???anyone?

Correct Correct Correct.

they should have black + gold ...love the black front glass

10-16 hours not considered extreme. i queued 28 hours before launch date for 5s