No, you're not going to get anywhere near $1400 for them, not even near 1/2 of that, not 1/4 of that. If they're in a real good shape and you have all the center caps and lug covers, you'd do good to get $300 for the set. Unless you just don't like them, I'd keep them. No they don't look natural to the truck and I think part of that is the offset, but they don't look bad with agressive tread pattern and raised white letters. You should be able to find the standard OEM steel wheels usually in white for about $20-$25 each.
No they are 16 x 6.5. I thought about doing 16" or 17" (10" wide) steel wheels with center caps too, but it will probably cost more than a set of polished American Racing Bajas.
I wish we could find 35 x 10.50 tires. I prefer tall and skinny. Better mpg and less parasitic horsepower loss to the ground. I'd run a 10.50 wide tire on a 6.5 wide rim.