dunno how loud your ticking noise is. mine couldnt be heard from the cab. it also sounded "natural" and good. never had a problem selling. if it sounds rough you have cam sensor issues. there are some good writeups online on the repair for the intermediate wrench turner.
I have had all mentioned 4 times over at least, My next one will either be a ECOBOOST or a Tundra. I currently own a 11' Yukon(Tahoe) and it is an awesome vehicle compared to SOME others I have owned that start with an F. Just my 2 cents, On HWY. not pulling, I can tear a hole around 20 mpg. running 72-74, City probably 15 ish.
They keep a steady pay check coming my way every week. The 4.6 and the 5.4 are the reason ford didnt need a bail out. They are junk. By 60k you'll have to start replacing coil packs. Then youll start hearing a rattling noise coming from the timing chains. Cam faizers. These motors are really sensitive to dirty oil, becuz thats how the timing is advanced. Unless your going to trade it in every two years, id run from a ford. Or bring it to me to fix. Though I have found they have finally had someone built a decent diesel engine.