Im submitting a proposal for a trucking facility that wants 8 acres of their location plowed. I had a sub put together numbers for me to push 2 to 4" using a truck/plow and a loader/pusher - what do you think is a fair time estimate? I am arguing that it can be done in 2.5-3 hours (w/ both pieces), sub says he needs at least 6 hours for both pieces.