Lighting.... well that really is an issue unto itself. I've found that working with my Canon 20D/Sig 8mm and shooting in RAW has been a great enhancement for panowork. This is especially due to the fact that the camera is pretty good at covering a very wide range when I do 3 shots with different exposure times per 90. the bit of required blending is quickly done with limited PS time involved. stich in PW4 is a quick and easy. A little bit more of PS tidying up for zenith, nadir and the odd touch up or two result in great quality panos.
Useing external lighting has lots of problems due to the inherant issue of the lens. A few guys I know will have:
3 or 4 battery powered video lights. These can be positioned around the scene out of sight eg. behind a sofa.
some reflectors in gold/silver/white. These can be used with 1 video light mounted behind the camera faceing 180 away from the lens. You then use the reflector (can be a bit of white card) to throw the light forward. The reflected light gives a good all round lighting without throwing to much shadow (even of the camera) or being harsh.
a softbox is nothing more the a box like structure covered in a smei translucent white material against which/in which a white light shines. the light becomes defused by the material and creates a soft glow.
I've not tried any of this yet. But I will as of the beginning of next year. I could imagine that one could command a higher fee if one went to the trouble of lighting the environment... thus giving the client the feeling that there is a lot of effort involved in doing what we do.
If I only had an hour to chop down a tree... I'd spend 45 mins sharpening the axe.