That's called blast and cruise. The 250mg test per week is the cruise part, blast is whatever you want and as much as you want while still keeping tolerable sides. Lots of high level people do that, it does have both pros and cons (the internet is full of them so I wont repeat them). In the end it really depends on your goals and the risks you're willing to take.
Oh, and you wont recover natural testosterone on 250mg per week. Just so you know.