First of all, I don't have RCD tunes. But I can comment on your clutch.

I'll tell you from experience, SB 3600# dual disc with 12 buttons per side won't hold up to the high HP tunes for these trucks. But SB doesn't offer hydraulic upgrades for these trucks either, so the highest option they have is for 3850# DD with 12 Feramic buttons per side, and that's supposedly good for 950 at the flywheel, and with 20% rule, that's only 760 RWHP. With the torque these trucks are making, I'm still worried about the 3850, but I'm going to try it out anyway, don't have many other options.