The two biggest things that seem to happen with the Hemi are 1) Exhaust Manifolds warp and often break the stud bolts off (and make an annoying noise) due to repeated heat/cool cycles. It can be expensive to repair out of warranty. Just check that this truck's are good. 2) Lifters and cam failure.
By 100k miles, the exhaust manifolds have either already warped and been resolved, or maybe they never warped (if your prospective pickup isn't making exhaust leak noises). If the exhaust is leaking, then it can be some work and expense to get resolved. So just check that out. And the Cam/lifter issue you never know when it might be a problem (or never). There's really no tell-tale sign or anything you can do to predict if it'll be an issue.
Beyond that, as far as I know, the rest of the vehicle, mechanically in that era are pretty solid. Just the usual wear and tear maintenance items which should be able to be spotted (if there are issues) by having a mechanic or knowledgeable friend look at it. On the interior, some of the trucks that had large LCD screens, had delamination issues, ..so check that out. Air suspension can be an issue for some owners ...if this vehicle has that.
As far as wheels go, are you looking to go back to stock? You can check salvage yards. Look up 2013's on the internet to see what wheels you prefer. Any wheels from '09 to '22 (gen 4 ..5-bolt) will fit. Facebook Marketplace is usually full of used (good) wheels around here. And some on Craigslist.
Good luck, hope it works out for you.