the standard dose for TRT is 200mg eow.

250mg ew is too high for cruising, yet too low for any real gains.

Why would you want to cruise at 21?

you say you are OK with being on TRT for the rest of your life, but your life has barely started.

You should do a rethink on this whole agenda, and make a plan based on common sense and valid data. Yours doesn't make any sense.