We're used to bidding small and medium sized properties. Can any of you guys tell me in your experience how to bid 18.4 acres of asphalt (plowing area, not including building). It's one big warehouse in the middle and all the pushing will be away from the building. Not a lot of Mickey Mouse in and out stuff, and no obsticles in the way. I'm looking for any help on how much time for different sizes of blades, equipment or on pricing. Does anyone have a per acre charge? On the lots we do, we just count parking spaces. Also, for you guys that use Pro-Techs, what hourly rate do you get for different size pushers?