I would say that with 305 AH you should achieve your goal and some. I installed a 100 AH system on mine and have more power than I can ever use. The only issue I discovered is that the BMS does not like the brake regen and it cut off the battery. I deactivated the regen system and no more issue. I use a 12v @ 60ah AGM battery for the system's 12v accessories. There is a slight "ghost" currant drain from the Li batteries so I installed a 200 amp cut-off switch on the system.