You can find out what sort of resolution figures you get for many lenses on a Nikon D200 by visiting
www.PhotoZone.de. You need to go to the reviews section. I suspect your lenses will perform on a par with the best when stopped down to F8 and F11. I find the eye relief on the D200 fine and I wear eyeglasses. You might want to consider changing your eyeglasses to a pair with frames that sit closer to your face. That would be cheaper than a D2x...
Leif