Hello welcome on board.
I hope this is the place where you can find an answer for everything you're looking for.

Thats great ur back at it especially with ur kid. As far as a program, being ur just getting back at it after a decade off, take it slow and start as a beginner. Focus on form and let the power build on its own. Was ur test low prior to ur cycle? Not sure why u picked prop for ur first cycle back.. I would focus on diet, health, bloodwork, and get a year of lifting before hitting some juice. Injuries from starting to fast will hamper all the enjoyment from doing this with kiddo. Jmo brother. Glad ur back in the game..

How long did you train leading up to the meet? Given your size and your total I feel like you don’t really need a full cycle for a while, just true TRT and Re-sensitizing your CNS. Aside from that press is right about your tendons, likely they need to catching up first.

If you've had a 10 year break and compete in the 275 class then surely there wasn't any need for a cycle to begin with unless your test is very low? At that weight you must have tonnes of scope for some natural muscle building again to begin with, all of your tendons will be extremely weak and untrained atm as you know. Not being rude but I suggest you should be doing some good cardio alongside also as I suspect you may have some fat build up if you are able to hold that kind of weight at 5'10.

You don’t know if your taking 400 or 600 mgs a week?