Man that sucks about the DubJ, but I'm looking forward to seeing what you do with a WK! I was apprehensive when selling my WJ to get one but I'm very pleased. Like you said, stick with the HEMI, tune it, CAI and throw on a Gibson cat-back an you will have plenty of power. I went a step further and deleted the cats to get some extra tone.
You may already k ow what you want to do for your build but I would recommend looking a a Superlift hybrid. You can obtain 6" lift with great articulation/drop without the price tag of a JBA lift.
'05 WK LTD HEMI|Custom 6" lift-Superlift+Spacers|EGR|AEV Savegre|35" GY Duratrac|SRT8 Front and Rear Sway Bars|Rusty's Adjustable Rear LCAs|Mopar CAI|Gibson 3" Cat-Back w cats deleted|RIGID 30" LED|SC Flashpaq|Yakima Bike+Snow+Kayak|Rola|Superwinch X9 winch|Custom bi-xenon Projector Headlights|