I am assuming in addition to invoice you're getting the available rebates right now? On a 2020 right now you should probably not be paying more than invoice minus any available rebates. It's been a few weeks since I ran numbers, but most of the good deals I could find were 16% off of factory sticker (MSRP). I did deal with one dealer that claimed I was getting "invoice", but he was using rebates to get there.(I'm looking at an add on this screen right now for $2000 retail consumer cash, $2000 bonus cash and $500 finance cash).
Also, if those are factory wheels, I would guess you could do exactly what they did for quite a bit less than what they are charging. The new tires don't need sensors, factory sensors are usually left on the wheel with a tire change (plus the dealer gets to resell the tires that came on there from the factory). The leveling kit is not expensive but would require a few hours of labor to do. Alignment comes with many tire deals. I don't know what a calibrator is, maybe they had to recalibrate speedo with bigger tires? Wheel lock kits are cheap and even come stock on many models.
Not saying this is not a good deal, because it's all about getting that one truck that is perfect for you. You have to decide if $5k is worth it to you for the tires or if you'd like to find one just about the same and take it to a tire discounters to have them do all of that for you for less. I haven't done a leveling kit in 5 years, but I'm thinking it would be significantly less to do a leveling kit and put those tires on it at a local shop.
It is a pretty truck though and if it's not worth the hassle to you to find one like it and re-create this, then I'd go for it as long as those rebates are included. If it's not exactly what you want, find a dealer that will order you a 2021 at invoice or FFP and then when it arrives add all of those options yourself. The money you save in doing the upgrades at a shop will probably be lost in the differences between 2020 and 2021 rebates, but you'll have the exact truck you want.