Ofna Ultra LX Pro conversion

[TheRandom1]

Hey guys, been browsing the site for a week or two now and this place is awesome! I recently traded my Sprint 2 for a buggy (see title) that I'm converting to electric (nitro bugs the crap out of me) and figured I'd ask a few opinions.

http://randomidiot.com/images/buggy/100_0552.JPG

First off, I know a lot of people have been having problems with the MMM esc, but CC's customer service is second to none, should I go with that?

My plan thus far is to go with a MMM esc (unless I find something more reliable), a Medusa 2200 kv motor, and nimh cells for now (no money to go lipo just yet) but eventually lipos will be in the mix there as well!

What kind of runtimes can I expect from lipos and what kind of speeds with the above setup?