I found 4 gauge speaker cable from an audio shop (this is the same size as the factory battery cable if I'm not mistaken). It's very high quality. 0 gauge is just too expensive and 2 gauge is very hard to find. I got 30 feet of 4 gauge for just under $30. I've done some research and a lot of guys run 4 gauge with no issues. I have no extra electronics at all, just stock accessories and that's it, so it should be fine. Going to get the fuse shortly, and start the relocation.