LIPO Question

[C-5Quad]

ok I am wondering if these LIPOs would be good for my V-twin maxx that Im building http://cgi.ebay.com/11-1V-12C-5000mA...QQcmdZViewItem I am running 2 vxl setups on my max with stock gearing I dont plan on gearing for speed just bashing around the parks where I live........I know the amp rating is low only 12c constant but I dont think the vxl systems will draw serious amps...plus its these packs or my 7 cell ib 4200s I dont have $300 just for 1 set of maxamps 3s lipos .....so help me out here which is better