OK here is my list so far:

VIP-848-BC8 - 8 Port Multiplexer
VIP-708-KM - 8 Port KM
X-Keys Professional
X-Keys Stick
1 x YKey
5x USB --> PS/2 Adaptors

Other than my PC's and Screens - I think the only other things I would need would be a keyboard to use, a micro-keyboard to use, 4 wireless mouse.

I would also need a simple mouse kvm switch - any recommendations?

Would that give me everything that I need?

-Slats