Hey everyone. The current idea my band has is to buy a 120 watt tube head that we had our eye on... But MAKE a 2x12 cab. Would something like this be recommended?

I read that the louder tubes go, the more output, would 2 60 watt speakers blow? How would I go about wiring this up? The original Cab for this head has 4 Vintage 30s. But I would imagine that would be too loud, not to mention heavy. So we wanted 2 V30s, and the cheapest way for that, would be to make it ourselves...
Unless theres already some quality 2x12 V30 cabs that cost under $300.