Because you are not sure how you will respond and due to your history with acne, it would be best to start out at the low end of a test only cycle. Test is the base of all steroids and although it can be a really intense drug at high doses, at low doses and with proper estrogen control, you can have a mild cycle that will still provide great gains if you know how to eat to gain and have a good training program, For many peoplel one good course of accutane is enough to alter how your body produces acne in the future, but it would still be wise to take this slow and find out what is going to happen. I would suggest 250mg test e, every 6 days for 10-12 wks. Many people start out at 500mg test and do just fine, but dont think that 250 every 6 days will be weak. I recently helped a guy who put on 25 lbs on his cycle of 250mg test e, After PCT, he was able to maintain about 10 new lbs of muscle! Thats a huge jump. If your acne starts to come back, you might want to reduce your dose or begin using an antibiotic from your Dr to get you through the cycle.

1-12

test e 250mg 1 shot every 6 days. If you find that you are not getting any new acne by wk 6, you can move your dose to 1cc every 5 days

adex.5mg 1x wk, 2x wk if you feel you need more estrogen control. I don't think you will. 

PCT will start 2 wks after your last injection. nolva at 40mg for 1 wk, follows by 2 wks of nolva at 20 mg. 

At your age, the cycle length and at this dose, you should do well andstill be able to recover easily. Over time though, as you get older and do more cycles, they can be harder to recover from. This is especially true if you opt to use deca or tren down the road.