Word is that after Watson, the team has Ford at sub-slot, Frelick at sub-slot, Davis, then (believe it or not) Rocker.
My personal feeling is thay the HS SS candidates all have limited power profiles, which means gambling on projectability. I would prefer Ford at just under slot. He has a very similar bat profile to Javy Baez, except stronger to opp and slightly less swing and miss.
The most likely scenario is Watson.