What's the absolute smallest setup I can get with high quality sound
and these features for playing live? I don't need an amp.

Vocal Chain: Mic Preamp w/ phantom mono, then limiter, compressor,
reverb, delay in stereo. Technically I only need delay on one channel.
The DBX provocal looks nice though it's interface is lousy and I
still need a mixer.

Guitar Chain: Instrument amp like Para DI, compressor, aural exciter.
Aural Exciters seem to be independent and not added into other
processors from what I see.

Thanks