We are doing genelec speakers and a turn table (yet to be determined) and pre-amp (yet to be determined). The turn table will be located in the man cave, and the equipment rack is in the garage less than 100 feet away. What is the best way to pre-wire for this? I am thinking planet wire for rca connections, but what about the ground? We've never done this before and I want to make sure we have all the wiring we need. Any suggestions would be appreciated. Thanks.