Well, computer monitors are just for what I'm using them at the moment (with the 70s Beomaster 2000 as an amp and occasional source of radio programming) and that's what they were in the office as well. If you install them high, I'd definitely tilt them downward, as they actually need to be aimed at your head Having them close to the wall might benefit the bass.
One more thing, they have a pretty strong magnetic field. If you still happen to have a CRT monitor, keep them far apart! I noticed this when they discoloured my TV set temporarily from almost two feet away...