Wow, quite a lot of questions there. Will try to address it. Please ask again if I've missed out something.
Firstly, Congrats as you have taken the first step by asking. If you've just graduated then you should be 23-25. And look like your parents are smart people and have the foresight to apply the loan for you. If they applied when you were 18, then you would be 5 years in. Is the loan under your name or your parent's name?
Should point out a couple of things here. First, don't settle this ASB loan. We want to take advantage of OPM. At your age, you should always make sure that the loan is at max tenure all the time so as to minimize your monthly payments and get back the ammortized portion. Secondly, if you're going the 'rolling dividend to pay next year's loan' route, don't ever pay annually. You will lose out on the compounding interest. You wanna pay as late as possible, just after they lock in the interest for the month. Also, interest on the loan is probably lower that what you are paying now so you should terminate and reapply as soon as possible. And when you reapply, go for the max tenure here again. Don't worry about the never-ending tenure. It is a non-factor here. Totally ignore it.
If you're rolling the dividend, at the end of 30 years, you would only have 200K. This ASB loan tool has so much more potential than that!
Since you have monthly wages now, and if you can afford RM 1,000 per month and assuming the banks approve your loan, I suggest you don't touch your dividends and let it compound. Here is what I would do if i were you If the current loan is under your name). Terminate the current loan very early in the month and get back the ammortized value. If the loan is already 3 - 5 years, you should get back RM 3k - RM 5k plus some insurance premium back as well. Do with this amount what you will or you can start your ASB2 with it. Immediately reapply your loan and push the banks to disburse the amount into your ASB within the same month! (cannot stress this enough as it will effect your dividend and your bonus dividend)
Keep paying the monthly from your salary and don't touch the dividend. After 3 years terminate and reapply to get back the ammortized value and take advantage of the bank's competitive rates. Again, timing is crucial to make sure that they put in the money in the same month you terminate. Rinse and repeat every 3 years.
Ok i'm gonna be your fortune teller here... barring any unforeseen circumstances. After roughly 10 years, you would have earned 200k in dividends. Free to do as you will! From here on, you will be earning dividends on 400k (200k cert + 200k cash dividend). Plus if you terminate/reapply every 3 years, you would have additional 10k
If PNB still limit loan size to 200k, and your salary in the last 10 years probably would be substantially more, you can start your ASB2 loan. Sooner even if your funds allows it. For me at the time, PNB allowed 400k loan so what i did was took out that earned 200k dividend, transferred to ASB2 and applied 400k loan on ASB. So earning on 600k yearly. Then when the banks allowed loans on ASB2, I applied the 200k ASB2 loan and transferred the 200k cash to ASD, now earning dividends on 800k (400k ASB; 200k ASB2; 200k ASD). Of course during that time all of them were earning dividends for me so now I'm close to earning dividends on a Million yearly. More when it compounds.
As I've mentioned, we don't know maybe PNB will open up again so you need to be ready for when that happens. So you should focus on this medium-term goal. Once you reach that 10 year mark, reevaluate your position. The financial climate and landscape might be different then so no need to look too far ahead. Sometimes planning too far can be a liability or a hindrance as it closes your mind to possibilities as you are too focused on a target in front of you that you fail to see what's to your left or right.
To quote you, "I see myself here at an advantage to maximize returns and getting early capital gains". This is very matured thinking and hats off to you for having that early realization. Youth is your main asset here.