Re: More Ultrabeat & synths pl...
When you insert an instrument on a Channel strip sometimes you will be given an option on the number of outputs that can be assigned from the instrument: e.g. Mono, Stereo, 5.1, Multi-Output....
I'd suggest checking out the last video in the Ultrabeat series about Multi-channel outputs.
Basically, loading a multi-output of Ulrabeat allows you to route up to 16 of the individual sounds to an Aux track. e.g. Kick to Aux 1, Snare to Aux 2, etc. This way you can process each element with it's own compression, EQ, delay, reverb etc.
There are many, many ways to route audio in Logic... If you want to create a new track and route the output of the guitar to that track and automate a reverb on it that's perfectly possible.
Or you could automate the reverb on the existing track...
Too many of any plugin is when your Mac begins to choke ;-) But there are ways to help: When Mixing increase the I/O Buffer size setting and if need be you can freeze any tracks to avoid over taxing the CPU.
Yes, sculpture is a bit of a CPU hog - not as much as many 3rd party instruments, ES1 and ES2 are IMHO pretty efficient and less 'hog' like than Sculpture.
p.s. You might find the Logic 8 101 tutorial very helpful as well as the TNT series. There is chapter specifically on Side-Chaining... Very cool!