Couple comments about trees...
1.)If it's free, it's free. If it gets too big, you cut it down. It'ss not a real guilty feeling to cut down a tree. I received a spice bush for earth day, which I'm going to plant. We also have another unidentified seedling growing in our yard from an earth day tree a few years ago.
2.)Leland cypruses aren't bad trees, pretty much everyone in my neighborhood has one and the only time that one fell was during a hurricane (the worst one MD has had within 10 years) and it only broke a part of their fence. My neighbor's lelands are at least 50 ft high, but they're on the edge of the yard. Ours are only a couple years old, and vary from 6-12 feet.
3.)When my neighborhood was being build a couple years ago, a company donated several Bradford pair trees to the builders. These got planted pretty much everywhere. They grow quick and look nice, but if the wind hits it at a good angle, it'll land on your house. These fall apart all the time.