I've been cutting for close to 4 years now but always residential. I've looked at a few commercial sites but today I was asked to quote on a local winery and it's HUGE by what I've been pricing. Okay. This place is sprawling. I measured it at about 3 acres. Lots & lots of trees, mostly evergreens, to mow through & around that cover at least half the area. Some slopes that require a walkbehind. The owner says that they will do the trimming themselves (but I'll probably trim around the house area myself) I have access from a farmer friend that has a 60" Gravely that I can rent whenever I need it. So my question is, "How much time would this take to cut? And what rates are you guys using for this size machine?" I will apply my own rates to the time. Thanks for your help guys.