What height are other towers in your area? In my neighbourhood (not anywhere near you though) there are a lot of towers with 4 sections. (Approx. 10 feet per section and a mast) That would put the antenna about 45 ft in the air. Generally, 2 pieces of tower to the peak of the roof and another 2 pieces above the peak. Most of my stations are about 65 miles away. There are some taller towers, but they get very expensive. Just look at the price of a free standing 75 ft tower. Best to learn from what your neighbours (or even a block or two away) use. Your location is different, so your situation will be different. Remember too that a lot of the towers were put up years ago and the neigbouring trees might of now matured. This will also be a factor of how high you should go. Most of the towers in my are put the antenna just above the trees when they were initially installed, and now, the trees are shooting above them, well most of them. See quite a few with missing elements due to trees. Remember, trees move and sway in the wind as well. you can learn a lot of what you probably need for height by just looking around your neighbourhood.
