So if anyone has seen the new 8.2.5 changes it looks pretty amazing for us. There is going to be a party level sync. This entire dilemma of this thread will no longer be an issue if you just want to level up a new Tank or Healer. You can bring your high levels in and get to it. It'll also help you decide if you like the playstyle before having to hit 120 is my guess. Really happy with the change.

Other than that I hit mid 80's with this team and realized I didn't like the playstyle of these classes as much as I had hoped. I try to think about the class in general and see how much of it I can utilize and base it off of that.

With that in mind, I've settled back on using 5 Druids for the time being. I was using DH / 4x Boomkin, and while the 5% damage bonus is amazing, DH tank is a very mobile tank that I just wasn't able to maximize it's potential, and while they got buffs so did guardian druid. The great thing about Bear tanks is playing them close to 90% or better is not too hard, giving more time to focus on the rest of the team.

I also feel like I can truly utilize the strengths of the team even though it isn't mixed. PvP is totally doable, I am able to take on pretty much any fight in World PvP and not run into too many issues with follow being broken.
Group stealth and just general movement feels very fluid as well.

Here's to hoping I get a decent mythic + with this combo, we shall see!