No thanks, neighbour had two popular trees taken down recently, both well over three times the height of my house, charged £2k,took two of them 4 half days and they earnt every penny. Genuinely think you need a screw loose to be that high upwith a chainsaw. We had a chap do a tree in our garden a few years ago, his nickname was monkey for obvious reasons, I read he was killed falling from a tree about a year later. I'll stick with the glass, moneys not everything.