Great truck but it seems like a lot of $$$ for a truck with so many miles.I would shop around a bit first.

my 05 QC 4x4 hemi and my 07 4x4 hemi, along with 3 brothers, my dad and several friends ALL get between 18-21 mpg with 4x4 hemi's , all 1/2 ton trucks, all 4 doors, all 4x4's, this is hwy driving of course, around town its 10-14 depending on who is driving

You haven't said what you are towing, is it an open trailer, or heavier?

sorry guys...has football practice last night..

ill be towing a 22ft enclosed with the duster
and a 16ft open..most of the time..
the trailer weight and all gear is prolly 8k?
i feel fairly confident the truck will tow it when it was new..
i was most concerned about this truck with 200k
do these trannies hold up this long?
seem's like first impression the motor will hold up with this milage..
same for the diff?
i currently tow with a GMC 2wd xcab lwb..with the 5.o and 5spd manual. makes about 150hp?
although its in great shape and runs excellent
it gets 13mpg with out the trailer..
and 8 with the trailer..
but i tow 3days a week. (work requires the flatbed trailer with lumber on it)
so if the dodge has more power and the same milage its a still a positive for me...fwiw

agian i am most concerned with what will likely break or give me problems...with this trucks age?
cheapst

I would be inclined to look for a one ton with lower mileage, based on your weight and usage. You say you will be towing three times a week for work, might as well get something that is likely to be more reliable.
On towing capacity, after having had a wreck because I had too light a tow vehicle, I am convinced I want something that won't get tossed around by what I am towing when I have to hit the brakes in an emergency. My motorhome is 15,000 lbs, trailer is 9,000 loaded. Works great.

The lumber I haul is light weight . Mostly remodel type materials
So valvesprings is all I need to worry about?