Selling the parts for reasonable prices isn't screwing anyone - if the truck cost you a million, no one would feel obligated to pay you back what you spent, and if you had been paid to remove the truck, no one would expect you to pay them when they take parts off it. So what the truck cost you has NO bearing on what you sell the parts for.
Look at it this way: if you sell the parts for too little, anyone might buy them quickly & resell them for a profit. But if you sell them at NORMAL prices, people who actually need them will have time to find you & buy the parts before any vultures snatch them up.
I got some (friendly) ass-chewing a few years ago for offering & then selling a pair of mirrors for $250 (and I felt guilty about it at first) that I had less than $40 in. There was a LINE of people begging me to take their $300-500 instead of honoring the deal with the first guy to e-mail me. In my case, the guy actually kept & used the mirrors, but that might not happen with all the parts you'll be getting rid of.
So if ANYONE turns a nice profit on those parts, it should be YOU. You're the one taking the risk of buying, storing, disassembling, & shipping it. Don't forget that the skill & labor of properly removing & packing the parts adds a LOT of value to them, and you deserve to be paid for that time & effort. Just go to any U-Pull-It junkyard to see what can happen to nice parts when the first guy there doesn't need them or doesn't know what he's doing.
One other minor point along that line: if you sell a part too cheap, the buyer might not realize what a deal he's getting, and not take care of it. That's not a big consideration for most of the parts on that truck, but it applies to original Bronco parts since they're hard to find. Especially FSB parts, which is what I deal with. Many FSB-specific parts aren't in production anywhere, so when they're gone, they're gone. Selling them at an appropriate price helps protect them from abuse or neglect.
If you make $5K parting it out, then that's what the parts were worth. You can feel guilty about it all the way to the trail in your eB! ;D