Has anyone hardwired one in their VX yet?

With my plans of fabbing an XBox system (with use of the DVD player within) into the VX, I am confronted with the use of a power inverter. Most likely a 700 watt. Now, I imagine this will call for upgrading the battery, but what about the alternator? Would it be a good idea to keep that in mind also? I had done this years ago in a custom van I worked on, but am unsure of the perfect outfitting for the VX.

My 2 questions are....

Are there any good suggestions for a battery (I suspect I am looking to go with a heavy marine battery)?

Will the stock alternator suffice with the upgraded battery?