That all depends how much the hosting will be and the expense of 2 rigs with all the hardware, there's a few ways to go about it but it could be more expensive then you expect.  You need 2 complete rigs that is 10 gpu's, power supplys, mainboards, ram, cpu's, hdd's, pci-e extenders, mounting equipment to place the hardware.   Each rig is a complete computer with a bunch of gpu's attached to it like an octopus of wires n' cables    Atleast you could forgo the computer case with an open air design and mount stuff on wood.

Hope its a good friend being the amount of work involved in the setup, other wise you could get scammed easily if you just hand money over to some guy to set it up in his basement.