Congratulations on a very fine TV. You can wall mount it no problem, the only question is if that's what you want. The issue is not the TV or mount, but the wall itself, and specifically the mounting method. I even researched a tiny bit on swivel mounts for this very heavy TV for a friend, but I stopped because he's eliminated that possibility. THAT would have required extremely secure mounting.
SD will appear too soft. The more you compromise for that, the less you will enjoy the resolution of 1080p. Everyone has to find their own solution. My solution was to completely forgo SD since years ago.