Ditto for what Marin says. It's a very nice installation. The CG concerns you have are legit, but most of us are running around with quite a bit up top anyway. I've got solar, Sat. TV, Radar, etc., and I'm going to add another two solar panels, higher mast, and even put the Sat. TV and Radar a bit higher on that new mast. Fortunately, I'm also rebuilding my hardtop, and you can be sure that I'm looking at the latest materials and construction methods to save weight up there. I don't think you've got a problem with what you want to do, but it's great to be mindful of things that challenge the reserve stability of your design. When I've really been in doubt, I've consulted one of the staff Architects at Krogen, as I did when I was considering an extension of my pilothouse. One of the inherent problems with having a boat with "space" is that we tend to fill it, and if it's space above the CG, well, you know.