A123 Lifepo4 advice please

[shawzie]

Well after much thought I think I will be going the A123 route with my brushless 8ight B.I have small children and really don't want to take the chances with lipo in this stage of my life.I also live in Canada so there will be long storage times.I would like some advice on if this setup will work allright or if I should find a better alternative.

I have a Tekno 8b 2.0 roller which I was thinking of running a Tekin RX8 2650 combo powered by 4s2p a123.My track is pretty tight so I don't really need tons of speed,will this setup be to heavy?is that the right Kv for those packs.I figure I will make 2 flat packs and stack them in parallel which will give me 4600 mah at 13.2 volts.Any thoughts or reccomendations are greatly appreciated.