i wouldnt at all.. you are still very young and there is no need nor reason to use steroids whatsoever... you would be much better off going with a sarms stack... here is a strong layout
1-12 AC-262 (Accadrine) 10 mg first two weeks then bump to 20 mg per day once a day in the a.m.
1-12 lgd-4033 (ANABOLICUM) 10 mg per day dosed once a day in the a.m.
1-12 S4 (ANDARINE) 50 mg day... split doses... 25 mg in the a.m. and 25 mg 4-6 hours later
1-12 n2guard
Mini pct 13-16
Clomid 50/25/25/25 OR Nolva 40/20/20/20
Gw-501516 20 mg day