My driveway is 600' long. I used dirt as a bed, and built it up close 12" thick. Since time was on my side, I let it sit for over 6 months. When I got the money, I ordered 12 loads of crushed concrete on a Friday. The drivers tailboarded each load for me, and I spread it with my tractor & boxblade. After each load was spread the way I wanted it, I rolled it with a large grass roller that I have. By the time the next truck came to dump, the stuff was so tight that the loaded dump truck didnt compact it at all! My driveway is 2 years old, and it is holding up nicely. Up by my house, I made a circle drive out of crushed concrete, and finished it with some milled asphalt. It is very nice!
I live south of houston too, and these are the prices I you can get for a 16yd truck:
crushed concrete: $325 to $375 depending on where you get it.
milled ashpalt: $375
A cheaper alternative is what they call "Pit Run". It comes from the Eagle Lake gravel pits. Last I heard you could get an 18 wheeler dump trailer for three something. Not sure where you are, but that might be an option. Check the yellow pages for those gravel pit companies.
Later...
Edit....
Wow..I need some new pics. It looks soooo much better out there than it does in these old pics!