I recommend using an 8-10 pound line on your main line with a maximum of 20-pound leader. The leader will help you to stay clear of any weed beds. Squid have large eyes and see well at night so applying some stealth is a good idea. Make sure you get a few different types of squid jig in your tackle box. Sometimes squid seem to prefer the smaller 3-4 inch jigs rather than the larger 8-9 inch jigs, so make sure you have both available.  You may also want to attach a sinker below your jig or a weighted bead above your jig depending on how buoyant it is. The last thing you want is your jig stuck on the surface.