Running those while shutdown is a waste. You need to wait until after you are off the compounds and esters begin to clear for them to start working. Usually 2 weeks after last injection
There os defintely things you can do to decrease risk, but its certainly a risk of long term HPTA damage at your age. Thays why we recommend no earlier than around 25
There is little to no sides with sarms, so I would suggest 15mg. If you want to start lower thats fine but I wouldnt waste a lot of time at the lower dose as it wont yield the same results
They should have you dialed in to a test dose that doesn't require taking an AI. Thats what everyone means and you are at the high end of normal range right now so test dose might be a little high. What have your estrogen levels been at? I wouod suggest dropping the AI
As long as you were on its just going to take more time if you are able to recover. Some people just wont be able to get healthy test levels back being on that long. Its possible but you might need another month or two and reassess. Id run more clomid to help the process. Maybe throw in a test...