Zooms can change focal length either by accident or creep. Nothing worse than to be a couple hundred shots into a pano and have a change of focal length. Primes are lighter and they are considered at least historically to be sharper. I'm dragging out a slew of old Nikkor primes in anticipation of a D800 arrival to test that theory.

Choice of lens is really going to be more affected by proximity to your subject. You may not have much choice if you're doing an interior. A telephoto may be useless. As for resolution you'll need to define the end product first. You can really over do it but it is fun to play. Good luck.

BTW, you can spend a lot of time doing HDR panos. I'm not a people person so I generally carry headphones, the noise canceling type. Isolation and a smile works.

Harry