I would like to add that I am 6'0, 190 lbs, about 15 percent body fat, and have been lifting consistently for 4 years. I am well versed in dieting and training plans. I've experimented with creatine, BCAAs, fat burners, multivitamins, fish oil, preworkouts, etc. I am ready to take things to the next level.
I am concerned about maintaining endogenous testosterone levels and avoiding shutdown and actually keeping my gains. I want to do everything correctly and safely.
My goal would be to bulk then cut.