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

On Minato, speaking as someone who's been experimenting a great deal using him lately, you'd need one, or a combination of, or all of the following to make him work great as pos1 ninja:

- his p2w bond barrier;

- his skillbreak (not in game yet, but at the rate he keeps show up in event, I suspect they might rush that in the not too far future);

- Kisamehada instead of 5KM, so you could take immunity on wind;

- Edo Hashirama (heals and remove all debuffs from senjutsu users, which wind/water main can be w/ certain talent);

- Ningendo full bt (he's technically f2p, he can act as a low cost 5KM w/o barrier but w/ similar chase and a mirror to boot, meaning you can take immunity).

- Asuma WB new bt (Courage Y+1) would also make him a really good support for Konoha lineup in general, this is no exception.

Alternatively, you could try that earth team you have on wind main, assuming full bt Kurenai, and use Kurenai to remove all debuffs from wind main so that you could use her reset.

But other than that, probably have to shelf Minato for now.

best support for edo minao in pos1 is skillbroken gakido. decrease mistery increase enemy mistery. work on him.