Congrats on your accomplishments.
I am one of the people here that believe that 17 is too young to start AS, many others will disagree with me, and God bless them for having an opinion(I really mean that).
Your natural test levels are pretty high, so I would suggest reading up on Mentzer for some training techniques (he'e a bit esoteric, but knew his shit). I think some High Intensity Training may be a better short term solution. Remember Brief, Intense & Infrequent!!!!( when you read Mentzer you'll understand exactly what he's saying- well at least most of it-LOL)
Wait on gear till your 20, when test levels have dropped off some. Also at your age gear can be hard on connective tissues which are not done growing, and tendonitis could bite you pretty hard.