IMO, I'd put the Alesis and BBE in the effects loop. Alesis first, into Maximizer. Seems like the more sensible solution to me, as it'd keep the compressor from doing anything funny when the BBE's processing kicks in.
However, the Alesis 3630 isn't exactly a typical compressor, and probably will do something funny anyway.
Your other effects... keep them out of the loop, of course.
