I will be doing the same thing soon...here's what I am doing:

Get one of those add-a-fuse kits (even Kmart has them) and hook the lights up to the in-car fuse box. You can mount the switch anywhere you want. Just make sure you use a good ground. I prefer the in-car fuse box because the lights can't be on without the ignition in the on/start position so they won't drain the battery inadvertently. I don't know if wiring them in series or parallel will have any effect, I haven't sat down to figure that out yet. Once my suspension is done, this is the next project so I'll have better answers then. Hope this helped a little bit. Good luck, any questions/concerns/better solutions more than welcome.