My thoughts are if you like it and can afford it go for it. Life is short and one should enjoy it while they can!
I agree that you may be able to get the deal again later but a trade always complicates the deal. The amount they offer for your trade can vary quite a bit depending on time of year and if they feel they can sell it quickly.
We have looked at the Pinnacles and have been quite impressed by their quality. There may be one in our future as well.
2013 Ram 3500 Megacab DRW Laramie 4x4, 6.7L Cummins, G56, 3.73, Maximum Steel, black lthr, B&W RVK3670 hitch, Retrax, Linex, and a bunch of options incl. cargo camera
2008 Corsair Excella Platinum 34.5 CKTS fifth wheel with winter package & disc brakes