yeah its kinda what i was thinking even as a temporary thing.Remember, you can start with a power station and use it full time. If you outgrow it, you can sell and replace it with something bigger.
Or later when you've seen other setups in person, you might be ok with installing a full battery system with help. There are a lot that here that can help you at that point.
Bottom line. It'll work for you. Just size it right (or close), and have a way to charge it.