Bro, first of all you need to just ignore your coach. He's going to fuck you up with shitty advice like that. The problem with a lot of these coaches is that they have no regard for the safety or health of their clients, and only care about themselves and money. I wouldnt have a coach like that. No way
Right now you are still on the young side for steroids. You've done great to this point with your goals, but you need to take things in steps. I really think you should go with a sarms stack for 12 weeks which can really put some solid size on you without the severe suppression and side effects that steroids bring.
Check out the isarms YouTube channel for info on sarms or check the articles here. There are a ton
For your goals here isthestack I would go with to help you add size. It's the ultra Recomp stack. Make sure you get everything from www.sarmsx.com
https://www.sarmsx.com/stacks/ultra-recomp-stack-12-weeks-2
1-12 lgd-4033 10 mg day dosed once a day in the a.m.
1-12 S4 50 mg day... split doses... 25 mg in the a.m. and 25 mg 4-6 hours later
1-12 GW-510516 (CARDARINE) 20 mg day… dosed all at once 30 minutes before workout…
1-12 RAD-140 20mg day dosed once a day in the a.m.
PCT
https://www.sarmsx.com/stacks/sarms-mini-pct-stack-1
Clomid 50/25/25/25
GW 20mg per day
I would rather just start a basic cycle rather than doing sarms. I don't know much about them, would you please recommend a good first cycle from 1-12 / 1-16.