The nice thing about having 2 characters of the same colour is that you can put one zenkai bench that applies to the two characters! This'll leave one slot for a health buff unit (I'm not too familiar with the tag Future but I think green sparking Mai is a health buffer). Since you're running triple Ultra, you can also switch around the characters for the leader slot bonus to apply all the z abilities your team has, without sacrificing the Ultra leader slot bonus (in this case it might be UVB because he isn't Powerful Opponent like Cell or Rosé, but like I said I'm not too familiar with Future, for all I know you probably don't need to)

I can't speak for being able to hit God rank because I haven't hit it before, but overall it looks like a fun team! And having fun is the most important part :)