I would've already done this if I had the space in my house. That's my issue. 4 kids 4 bedroom house. No where to set up, and my oldest is autistic and he cant really handle the loudness of a full kit. Right now the only low volume practice options I have is either practice pad or rockband for my ps3 but it just doesn't feel as good as playing on a proper set up. Plus you're limited to the songs on the game and that's it.That's not a bad idea either!
If you decide to explore that idea, check the cost of just setting up your drums like an e-kit (mesh heads, low volume cymbals or rubber cymbal pads, electronics).
Might be cheaper to do it that way, as opposed to a complete e-kit.