By me it runs $325/day+ delivery for a 7 ton 65hp dozer (I looked it up). That's you operating the dozer. Most places won't do a half day rental on heavy equipment because of the time for delivery. Also make sure the place you are renting from doesn't require you to have operators insurance (unless you have that). Some places are set up to just rent to contractors who carry the proper insurance, other places, like a Grand rental Station, Taylor rental are full service rental shops which carry the insurance for you.

You might be better served hiring a qualified operator to do the work for you, you'll save time and money, just make sure that they are insured. I thought about doing it but we are have the logging company do it for us after they cut the timber.