Hi Edumakted,
I did a hyper 7 conversion ages ago, and love it. However it was a lot of trial and error - there was really no info around at the time! Just yesterday I found
http://www.electric8th.com
which details the whole process for you. It looks like he's done things a little differently than you intend to, but it would probably be a good starting point for you if you're new to all this stuff.
I've used mamba max, feigao and 5s batts with no probs. Will be a heap cheaper than a Neu/MGM combo, though arguably not quite as relaible.
Anyhow, good luck and maybe put up some photos of the finished product.