I think even with Doke and De Sousa back, Dave will still see a lot of run. Even when Doke's been healthy, he hasn't averaged a lot more than 20 minutes per game. And if memory serves me right, Doke gets into foul trouble a lot and is hard to play end-game because he can't shoot free throws very well. I would guess that Dave still get around 10-12 minutes per game on average, and on some nights might have to play around 20 minutes.
I'm not sure who I'd RS between Mitch and Enaruna because there are benefits to both. Mitch doesn't bring a lot to the table that we wouldn't already get from Doke, De Sousa, and Dave, and we're definitely losing a few of those guys after next season, so putting him on the shelf for a year isn't such a bad idea. But Mitch probably isn't going to improve much in that year. Enaruna could really use a year for strength and conditioning and polish, but his skillset is probably more valuable to next season's team because he can shoot 3's. I just hope he wouldn't leave the program if KU decides to go that route.
If Wilson comes to KU, RS Enaruna. If not, RS Mitch.