Just FYI, speaker SPL impacts how much wattage you 'need'. If you get a nice midranged voiced cab, it takes very little power to really crank out the DB's. For example, my Schroeder 115L+ would just KILL with 250 watts cranking into it. It is 4ohm, and voiced with lots of mids and very little deep bass.
The Thunder Child is literally just the opposite... voiced with a full, deep low end. Given this, and the small box, you run into the 'you can have two of the three..... small, low or loud. The cool thing is, with this box, given the 4ohm impedance and the ton of 400-600 watt micro heads out there now, you literally can have all three... BUT... it takes a bit more wattage than the more typical midrange driver loaded bass cab.
Your head would work fine with this cab, but would not IMO and IME result in the cab reaching anywhere near its peak output.