I’m using a single 200a/hr LiFePo4 and have been very satisfied with it, particularly with Lithium’s favorable attribute of a rapid harvest recovery rate (even during marginal harvest periods) along with it’s nearly flat discharge voltage characteristics .. However, If you go this route, determining battery SOC (state of charge in %) can be problematic unless using a SOC meter that by design is Li capable like Victron’s impressive BMV 712... Another aspect is with charging (mainly, correct voltage, cold WX charging limitations - equalizations not regd.) but your battery provider can provide these specifics...
Feel free to PM me for any other questions,
3 tons