What cycle should I do?

Ok, so I’ve whittled it down to two different cycle options that I would do.

Cycle 1: Ostarine 10mg + Enclo 12.5/12.5/6.25/6.25 (8-week cycle)

Cycle 2: Testosterone Cypionate 500mg + Enclo (Same Protocol) (12-week cycle)

Which cycle is more logical to do? My goal is to gain a decent amount of muscle in a short timespan, and also ideally I would not want to “cruise”. I’d just go natty off cycle.

Also I would strongly appreciate feedback on how to properly assess if I will need an AI, and also how to properly use Serms because I find lots of conflicting results online.