u could run two 3s 5000 polyquest and have probably the same power u have now but longer... or go crazy and do two 4s 5000 polyquest... and for charger i like the hyperion 1210 but i have the multiplex LN-5014 and the chargery c650 and there both nice also but the multiplex doesnt come off charged to the max( like if its my 5s apache it comes off that charger at 20.6 instead of 21)