Hi newbie here. I'm planting a privacy screen of conifers and am hoping to have my screen made up of Vanderwolf's Pyramids and Blue Spruce. However, the height potential of the Blue Spruces scare me. Ideally, I would like the line to top out at 20ft, but could live with 25ft. Is there any reasonable means of controlling the blue spruces at that height, without the tree morphing into a mess? I'm aware of the Fat Albert variety, but my local nursery does not sell them and looking elsewhere is pretty cost prohibitive for my situation. Any advise would be greatly appreciated.