27" Screen/Mac/Parallels

I am considering a 27" IMac along with an assortment of other PC's mostly Windows for development. Would I be able to eyetrack on a 24" or less window on a larger screen.
Would EyeProof and USB3.0 work under Parallels? Thanks for any input--Ira L.
Would EyeProof and USB3.0 work under Parallels? Thanks for any input--Ira L.