Congrats on the new memory maker and, welcome to JOF. Without hookups, you’d want as much battery storage as you can get. The dealers install batteries so work with them to install a group27 deep cycle at a minimum. If the budget allows, a couple LiFeP04 lithium batteries will serve you well. Head on over to YouTube and watch a bunch of videos on the topic. While you’re there, you may develop an appetite for solar so be warned