Re trees, I'm not worried about deforestation. Got about 45 Acres of trees here so thick you can hardly walk through most of the woods. I think a few trees won't be missed.
Re the garage/barn becoming 2 stories and blocking view, no, this will be an unheated building away from the house. We already have a 2 story unheated garage, the top floor of which WAS intended to be an office for my wife, however that floor filled up to the gills with boxes that came from our first house, and the bottom floor filled up with tractors, snowmobiles, backhoes, and other junk, so there isn't room to park our cars. Basically the new building is just to allow us to park our cars in the garage.
Re the height of the new building blocking the sat view, I checked that out, and it won't, plus I think it gives me an opportunity to mount a dish on TOP of this new structure to help me possibly get a view in another direction I'm blocked. Only problem is that this will mean another 50' of coax, which will get me up above 300', unless I dig a new trench to take a shortcut back to the house. But anyway, the new structure will open up new potential.
But overall, I can't wait to see if removing these trees has given me access to any of the Atlantic sats that I used to be able to see, before the trees grew up.