Stay at 18 and take BPA.
If we really like a player, I wouldn't be upset if we traded up to get him. I'm not as big on trading back as most. To me, the object of the draft is to pick as highly as possible. The higher the pick the higher the talent available. Oversimplification, I know, but picking at 18 is better than picking at 25. There are 7 people there who would be gone at 25.
Thinking back in the history of the cowboys drafts... I can't hardly remember a time when trading back worked out and was clearly the best choice. Getting Julius and having buffalo's #1 last year was ok I guess... but for the most part, the later round picks that you acquire don't amount to much. We got TE Ryan with buffalo's pick. Meh... big deal.
On the other hand, moving up a few spots to nab Emmitt Smith paid huge dividends. Anyone worried about the 3rd round pick we missed that year?
Moving up to get Russell Maryland worked out fine too. Actually, the trade was made for us to get Rocket Ismail before he decided to go to the CFL. Jimmy Johnson would've done wonders with that guy. Again, anyone worried about the late round picks we had to give up?
I know the vast majority will be against me, but I hardly ever want to trade back, and trading up always seems much better to me... as long as there is a player that we really like there. I actually wouldn't be too upset if we traded a LOT away and went up and got Hawk. I just think blue chip talent is what it's all about and I'd rather have one blue chipper than two solid players any time.
Like I said, I know I'm pretty much alone in that, but it's how I feel. It's how I'd draft if I was a GM. I know, I know... you're all glad I don't run the Cowboys...