Your BF is very high, I would get it down to about 12% before starting the cycle. Definitely run the sus and tren, I don't know if mast is worth at that BF. You can start tren at 50mg ED to feel how you react to it and build up the dosage from there, to 75mg and maybe 100mg if you have no problems with the sides. 50-100mcg T3 would also help a lot.
About PCT I don't know, I've never done one. But I advise you to run HCG through the cycle, and an AI to counter HCG aromatization.