MIDI controller question

[seanathan]

I currently have a MicroKorg and i use it alone (MicroKorg>amp) and as a controller for Reason, using an M-Audio Firewire 410 as my interface. I'm looking at getting an M-Audio ProKeys 88sx to act as a controller for the MicroKorg and for Reason. The ProKeys has MIDI out only, while the MicroKorg has in, out, and thru and the 410 has in and out. I have very little experience with this sort of stuff, so what I'm wondering is:
1) Would I be able to play on the ProKeys while using the knobs on the MicroKorg or the MicroKorg sound editor software to edit/change the sounds?
2) Could I connect all three (ProKeys>MicroKorg>410) and switch between controlling the MicroKorg and controlling Reason without messing with cables every time i want to switch?
3) Anybody here use the ProKeys 88sx? Any reviews or thoughts?

Thanks in advance.