Generally speaking SARMs don't affect BP or organ growth
I've read a lot about those compound in the recent months and it seriously seems to be the safest option before a real AAS
SARMs don't produce amazing results, but based on my experience with Osta I'd say that the gains are clean, keepable, pump is great and you feel great throughout the cycle, but the gains are unimpressive compared to Epistane, Tren or SD.
I think SARMs are the best option for a bridge between cycles or just to give you a little kick start before your PH kicks in.
(not for PCT even though we have very little information about SARMs and how they trully affect recovery)