This whole thing just looks to complex for any thing other than a gale( or less) center to develop over the Bahamas. As far as the Central Carribean wave, I think it is interacting with the trough and getting entrained into the system to its north. There is another ULL diving SW from GA into the GOM. According to the discussion today this will continue to track in that direction and leave a piece behind over the Bahamas, this was went across S. Florida (another ULL?) yesterday. It is this left behind piece that may develop and track NW'd around the trough into the So. Carolina area this weekend.
I think too much has to happen for a named or bonafide tropical system comes from all of this.