No, I'd use GND in Labrador as escrow, they'd be hosting.
Right, so i can have my miners hosted with let say Allinvain, why would i share the profit with you 50/50? I get to make more within the 3 months AND keep the hardware. You're basically asking for free stuff here.
Obviously math wasn't your strong suit in school, so I'll explain.
Presumably you pay a bill to Allinvain? If you have S5s or Neptunes, you're underwater, you're paying more to host then they mine. I'm offering you a way out. You'd get more from that deal than the selling price on the forums these days.