So now you get to do some math

Around 2000gph
So if I run the tunze full power then it's enough

What you have should be enough, if your doing an open scape it's very easy for water to move.

In my 4'x18"x18" tank I was running 1 mp40wes at 60% and 1 mp10 at 80% with a return from a quiet one 4000 throttled down to about 60%. Good flow no dead spots, I have 40lbs or rock in 2 formations and the pumps on either side.
I recently sold my mp10, loved that little bugger for a jebao wp25 and one wp60.

I have to admit I don't like the direct flow of the mp10 as it blew off flesh off one of my frags they're very powerful and up close can do damage. The jebao like the OP said can be aimed up so this will give me surface turbulence like my wide flow mp40.

Since you have the tunze you're pretty much rockin, don't remember if you said you were purchasing a mp10 but if you already had the ten use it. I personally would use the jebao. Once you see it in action you'll be sold!

Some serious wave action, sps were swaying polyps like in the ocean.... Amazing!

I think you will need to put both in. I just put a extra mp10 in my frag tank along with a mp40 and a Tunze 6095, they just can't seems to get enough flow. If I were you I would start with a mp40 and see where that leads you than decide from there.