You can do it a few ways. You can run 2 different power wires, or you can go buy a 0 or 4 ga power wire run it to a distro block (you can get these at the audio store) and bridge it off there. The remote is simple, run it from the back of the HU to one amp, and tie into that wire with another piece and run it to the other amp.
Ground can be done a few ways. Use 2 different ground points, get another distro box and make one common ground.