I can tell you I got a Rough Country 6" lift, 5 20x10 Moto Metal Daggers, 5 35x12.5 Nitto Ridge Grapplers (mounted, balanced & lugs)and that was $4623.04. I'm doing my own install of the lift. My bed liner was $425. I get my stuff at near cost from a good friend due to me helping him out years ago.
To me financing your lift/bedliner is the >>>worst<<< financial decision you can make. Your paying interest on an item that really doesn't add that much KBB value to your truck, nor does the finance company add that into the value of the truck. Now if your cash poor, then that might be your only way to get it.