take  this  with  a  grain of  salt because  I  No  expert at all but  love  the  game.  If  that were my account  I would  do this team for Hydra

Ninja/MonkeyKing/Rathalos/Leminisi/Iudex Artor  and  your mythical for good luck  :P 

I understand you got a lot of  champion upgrading to go to get there  but .....solid account - just saying

thank you for your opinion!

If I may point out the obvious? Your champs seem to show that you had logged in for the guarentee champs over the years but with no awakened souls, you haven't done any events. IE, you log in once a day, get your free stuff and that's it.

I say this because you have Starsage but unless you buy them, you have not booked him up at all. Because he's my main healer for me Hydra A team. But without good equipments and books, not sure how well he performs then? I guess it also depends on "what" Hydra difficulty you are doing too. For normal; Starsage, Monkey King, and Ninja should be able to get you the 6.6mil you need for the top chest. They could also do brutal too but then you would need to book, mastery, and well equip them too. Visix is a good tank for the Head of Torment but I also like Mikey as you can build him tanky as well. Plus he has a debuff spread too.

If you want THREE teams though to do Brutal, Hard, and Normal and get all 3 top chests in their difficulty, you are going to be VERY hard pressed to do that with what you have. However, if your goal is just getting top in Normal, then you should be fine.