Good stuff! Some minor notes (opinions, not facts):
I don't think that solo Somer is all that hampered by the lack of Trixiebelle and I would build solo Brewie by adding Roosters as, even though Trix is good, I find that Brewie's basic box really lacks in the damage department which can be fixed with Roosters. With Trix the box turns really one-note and has many extremely difficult match-ups. I would also very much recommend Stilts and Binge for Brewmaster (Stilts to add to his durability and to make his Aura better and Binge in order to have something for Wesley to do). Finally, for solo Wong, I would get Sammy LaCroix. Most likely replacing Old Cranky. Sammy is excellent and doubly so with Wong.