If somehow Sewell or Pitts falls to 10 (which I doubt), I'd definitely take them over Surtain. They're blue chip top prospects and you shouldn't pass on that solely because of need. Surtain is the best CB in the draft in my opinion, but not that much better than Day 2 options for me to pass on Sewell or Pitts.
I'd personally take Surtain over Slater but wouldn't be upset with the pick. It's very close for me between those two, and Slater is def worth the 10 pick.
Of the (most) reasonable options at 10, my top 4 would probably be Surtain, Slater, Horn, Parsons.