Honestly, you should not place career options as your choice unless you are going enlisted.
There will be 4 yrs of college or AFA life in front of you.
ASVAB is not a test that the AFA or AFROTC cares about. You would take the AFOQT.
For AFA apptmt oe AFROTC scholarship they are going to use your SAT or ACT score. Since you have not included them, we really can't give you any advice there.
As far as the do I wait to start life, and cost of college. Well, I suggest you go to
www.dfas.mil. If that is not enough to show you the disparity, look at 20 yrs. O5 which is not a fast tracker will make @8100 a month, an E9 (the big wig) makes @5300.
An O1 with less than 2 yrs makes just in base pay @750 more a month than an E3 with 4 yrs.
That is before you talk about non-taxable income like BAH (housing).
As much as college is a debt, and for non-scholarship cadets, a lot of debt. They make it very quickly when they are 22 as an officer. Think about it, you can be that O1 live on the pay of an E3 with 4 yrs. and pay off about 9K a yr of the debt.
They also give what is called a career starter loan to ROTC grads. Many cadets take it to consolidate their student loans. It is at a very low rate.
You don't have to go to a fancy schmancy college that cost 40K a yr. You can go to your state college, live at home, if you don't get an HSSP, and re-apply the following yr for an ICSP. The debt would be at the end of the day...what maybe 45K in loans. Most colleges also offer 100% 0% int. financing through their college. I.E. School costs 15.500 fresh yr. Take a 5500 loan. That 10K can be spread across 8-10 months (depending on the school) int. free.
There are options out there.
OBTW, just so you know the AFROTC HSSP will only review 9-11 yrs. Nothing, except a new SAT score and the PFA will matter.
They do not superscore. They take the best sitting.
AFA does include 9-12, and does superscore.
The two selection boards do not talk, and do not know the results from either board when or if selected.
I have a ton of respect for enlisted members, but if the decision is based on college debt, and wanting to get in there now as an 18 yr old...go to college, and take the debt. I think you are buying into the website allure that the Public Affairs office created to get people to enlist. It's called MARKETING.
Sit down with your folks and use that E2 budget of 1699 a month. Make a monthly budget, remove fed and state taxes, plus FICA, insurance, etc. Probably 1200 a month is what you will be left with. Now deduct car payments, car insurance and cell phone costs. Probably at on a good day 750 a month. Now gas money, and spending money(weekends). You are probably at 450 a mo. I have yet to address buying clothes to wear off duty or the latest X box. Let's say 100 a month. You are at 350. A new laptop...how many months do you have to save? Now you are stationed at Eilson AFB in Fairbanks, AK, and the family lives in Tampa Florida. The round trip airfare is probably @ 800. That means...3 months of saving to go home.
Getting the picture? Life is very expensive, and it becomes very hard when you are constricted by finances. You will never be a millionaire as a military member, but it is much harder for enlisted, especially once you get married and start having kids. The difference between officer wives and enlisted wives. Officer wives that work do so because it is considered gravy or their desire. Enlisted wives usually have to work because finances are tighter.
Think long run, not tomorrow.