I agree LGD would be the way to go. I have used YK11, LGD, Osta and GW. Trying S4 now and I cannot comment on it yet. I’ve never seen anyone bulk on Osta, so not sure how well the overall cycle would go. LGD is definitely the choice for bulking and GW although not a SARM would probably give you kick ass endurance in the gym, which should allow you to train longer. I am currently cutting on it, Osta and just added S4.
Honestly after this run, I am not sure if I will use SARMs again. Not sure they are cost effective for the results. GW 501516 is really the only one I can feel and see great results on. LGD and YK11 seemed promising, but I only added the YK11 in towards the end. It did help with lethargy brought on by LGD. Not very much information on that liquid though, not sure how safe this stuff is for the long haul, but at least I waited until I was in my 30’s. Feel free to msg me directly if you have any follow up questions and I hope you have a great cycle.