DFW-LAS in early June, 2 day stay

Lowest coach - $328 all in
Coach itinerary I want - $469 all in
First Class itinerary I want - $570 all in (lol!!!)
If I take the $469 all in, and I am lucky enough to get upgraded both ways (6 x $30 = 180) - $649

I guess it pays to always check the other fares...

Maybe I need to try expert flyer???