Some of the top 10s playing senior:
Ty Rowell, Walnut Grove
Luka Lizdek, Kitsilano
Pierce Strutt, Kitsilano
Fardaws Aimaq, SLSS
Grant Shephard, Kelowna
Jon Mikhlin, Richmond (double duty)
Cam Morris, STM
(Gr. 9) Miguel Tomley, Tamanawis
Not 100% confirmed, just based off what I've been told.
St. George's should have a strong team with Van Staten, Bacic and Dewar. As Tim pointed out, Delta will be strong with Jas & Jake. Kelowna has Bourcier, Shephard and Keyes but one or both of the latter two may play senior.