Yet another E-revo lipo question

Hey I've been reading post over many rc site trying to find the good setup for me. I need to be pretty sure of what I'm buying before doing so because I can't afford to make a mistake and waste 200$+ on battery and then realize I need to buy another pack!

About my setup:
I ordered the tekno neu 1515 1y squared I'm gonna use with the MMM I got some months ago (wish it will hold down it's V1) and never used.
I've upgraded to RPM a-arm
Using the L-travel shock with the original rocker
Gonna receive the Tekno Rc sway bar kit at the same time then the Neu.
New 32 pitch 18 tooth pinion that Impaktrc.com suggested to me for now. Might change that later as I see the results.


Now I'm looking for the right lipo to go with my kit. I've seen many and am pretty lost with all the post read. I'd like to be able to go bashing with em with some low gearing but also being able to do great speed run so I can waste my bro's nitro hitting 50 mph!

Here's the pack I saw and seemed interresting:

MA (yeah I know) 3s 5250Mah 30c x2 for 22.2v - about 350 they told me I could get 15% discount

Neu energy 3s 4900mah 25c x2 for 22.2v about the same price

A123 cell 4s 2300mah x2 in 4s2p setup with a 3rd pack of 3s2p for a total of 7s2p 23.1v 4600mah 30c. About 400$

I've been using home made a123 5s1p in my e-revo for some time and they miss a little punch, but that might be my soldering being pretty bad! ;) I heard well made pack have a lot of power.

Any of you have comments on my ideas, or other pack to recommend. Is the MA good even if they don't stand their claimed C rating or should I go with something else ? Some link would be appreciated too. Oh and btw I need to have them shipped to Canada:S

Thanks for your help!

Would 6s1p with lower MaH be good ? 6s1p 2500 mah x 2 or something close to this would give the sasme setup but with faster charge rate... Or are they all to big for the e-revo battery bay ?