its not TOO high, but a little high for my taste. I always say get between 10-12%bf first. especially if this is a bulking cycle, no matter how big you are, 20%bf never looks good.

I assume your talking about the Sus? If so it lends itself to somewhat drastic fluctuations in blood serum levels which can be difficult to manage. Also, you could argue all day when to start PCT after Sust depending on the compounds used but usually the long ester in sus will be decanoate with a half life of 15 days at usually 100mg. Now the average male produces 75-100mg of Test naturally and 15 days after your last shot your probably around that so figuring out perfect timing for PCT would require bloods

Ok first drop the clen because it is very harsh on your heart especially while running a cycle(yes i know "plenty of ppl do it" and none of them are the smartest) second drop the superdrol that shit is just plain bad for you(if u want to run an oral kicker use dbol @ 50mg ed for 3-4 weeks) lastly in my humble and conservative opinion, you do not need 3 injectable steroids in one cycle. KISS(keep it simple stupid) save the mast for your next cycle it works better when your bf% is lower. Run test and eq for 16 weeks at 600 mg each. You say your diet and training are on point but if they were you prob wouldnt be 15% bf, look up sgtstedankos post about the basics for beginners it has alot of diet and training tips that you probably need.
PS most ppl on this board are going to say ur too young for roids but ur 5 cycles deep and obviously not going to stop so at least do it the right way