Since it hasn’t yet been said, this is a lifelong endeavor. There’s no “tapering up” test levels and taking you off. Not that I think you think this but there are doctors dumb enough that they will propose this.
I’ll be honest, you’re going to be tired of this by 40. I’d do everything I could at your age to get it over 600-700.
Clomid/HCG/ + lifestyle adjustment may be a better approach for now, and if in 6 months you still aren’t mid-levels, then get on and be very ready for all the stuff it comes with. Your dick never really works the same way long term, you’ll stress about your cholesterol and RBCs constantly, and when you get mad your face will turn dark red like a heirloom tomato. But if you’re up for all this, go for it.