Computer based live rig. Tips?

Hi,
I have a mac powerbook running Logic with an m-audio fw410 soundcard. I´m about to get a good portable live rig together. Natural and processed sound and the ability to easily switch between sounds. Stereo outs to the sound engineer.
I´ll need a mic and a wireless system to begin with. And a MIDI controller.
Any ideas?
Any favorite sound processors?

I´ve seen a lot of appreciative comments about the AMT roam 1 elite system. I get the impression it only has one or two frequencies though. Did I get it wrong? If not has this been a problem live?
Any other mics (and wireless systems) out there?


thanks in advance

/E