Separatists beginner team help

There is a video on youtube called Separatists vs Phoenix.
Count Dooku(l), Ig-100 Magna, Poggle, GSoldier and Gunray.

Can I replace Ig-100 with KRUnmask?
KRUnmask is not Separatists and Ig-100 looks weak and dies to easy?
Thank you for your input.

Question2:
Can I use Count Dooku as lead with 4 Geonosians?
Can someone test this setup and let me know if it is any good.
I want to use this team in GW
Thank you very much