I am a landscape photographer who shoots multi-row panoramas - 2x11 frames for a 3:1 ratio using a D200 and a Nikkor 50mm lens (a Nikkor 18-200mm @35mm & @70mm for everything else).

I'd like a recommendation for the best kit for the above - NN 3 or NN5? or NN5L?

Stability and leveling are important to me.

Is the EZ Leveler recommended for the above setup (I use a Benro A357 Tripod with a KB-1 ball head)

For what purposes would I use a Rotator?

What other accessories might I need?

Thanks in advance.