Hi!

Basically water main is really the best option that you've got right now till you acquire some additional ninjas. Definitely combining her with Madara 5 kage and two additional supports are the best case right now for you and the most efficient. You can change there all your supporting ninjas pretty much, for example keep water main and Madara as the standard two in the team and run ninjas such as Kurenai, Naruto Chinese Style, Chiriku, etc healing ninjas.

Edo Minato's Mystery cooldown is really making the things hard and as you said, if you are not wind main, you'll struggle a lot with him, because the 3 round is way too long there