+1 on having a shop do it. But that's cuz I have little to no experience with working on cars. I figure if I had a junker to learn on I'd do all the stuff myself on that before I touch one of these new modern monsters.
Got a question to add to this though, so its pretty clear that forking out the 260-280 for the entire install kit is the wise choice, does that include upgrading the trac-lok if your miles are over 25k?
'12 v6, Black, Manual, JLT CAI, Flow master Original 40 series axle back, BAMA tune 93performance, Trufiber 3" cowl hood, GT Bumper w/ billet grille, Boss 302 Lower Facia and Boss chin splitter, Raxiom Smoked Headlights and Tail lights, Solarwing II, and a Car Seat for the shorty!