fins for 2+1 gun..?

Have been riding a 7’10 x 21 diamond tail 2+1 in the overhead range and have liked it so much am having my shaper build me a 8’6 x 21.5 RP 2+1 for the 2x to 3x zone. Shape will have WP forward, 13" N and 13" tail mol.

Currently riding Future F4’s up front, and a hand shaped (cut down from a Rusty flex 6.25) 6" rear fin which works well after I tweaked the shape and foil a couple of times. Plan on using the same set-up on the first go round, and plan on trying others to find what works best.

So looking for recommended front/rear fin feedback from those who have/are riding similar boards in bigger waves.

I know a lot of 2+1 fin discussions have been dropped over time, the ones I’ve gone thru are pretty much centered around longboards, hence this latest…

As always, thanks!