Good question. We need at least four to run, so after we got a fourth I intended to at least start the thread. With roadtoad and Mal's (eventual) coming character, that's three, but who knows when other characters show up. If you want to head over to the Closed Eye, don't feel obligated to stick around. Heck, Hacker's out of the Tavern anyway; him stumbling drunk into the Closed Eye adventure fits the character pretty darn well!
The adventure will fill when it fills, and I'm sure I bump into your characters at some point, either as a player or as a GM, so while it'd be fun to see Hacker run amok on the Isle, the call's all yours.