Congrats on the purchase.
^^^^ Ya, as 1222 put it, the JK only *needs* about half that amount of lift, depending on your tire size. However, I see that you're in AB - so I'm sure that your first impulse might be to go out and get the "biggest and greatest" in order to keep up with the Ford F350 10" lifts... but generally the rule of thumb for JKs is around (minimum) 2.5" to 3.0" for 35" tires, and 4.0" lifts for 37's. You can get away with less lift by getting aftermarket fender flares. However, that teensie-tiny amount of lift might not be up to snuff driving around Grand Prarie, though.
Keep in mind that anything over 3" on a JK WILL require new driveshafts (3" - eventually, 4"+ immediately), full flexarms, trackbars, extended brake lines, swaybar disconnects, etc. Also, most 6" lifts are typically long-arm kits that (*may*) require hacking off the control arm mounts and welding on new ones, depending on which one you choose. Also, most dealers won't honor the warranty on a JK with any lift over 2.5" or so - but that depends on the dealer you dealt with.
To top it off, most HID kits on the market aren't DOT legal, and your low-beams propped up by the massive lift will look like searchlights to everyone driving down the highway... except to those who are driving F350's with 10" lifts... lol. Hilldweller has a very informative thread recommending several legal, better than stock aftermarket headlight solutions.
I'd recommend TeraFlex for the lift kit (they make a 6" Elite lift), because that is what I am familiar with, however I'm sure that others will chime in and recommend other quality names.