Yep I would say thats a good price for a brand new set
You wont be disappointed with , I will be looking for some in a month or two
You could speak to Chilli Red about the Exhaust, she may be able to help
Do the mesh thing and maybe LED's in the reflectors (If you have a facelift bumper)
http://www.350z-uk.com/forum/viewtopic.php?f=26&t=41064&hilit=doogyrev+mesh
Personally I don't think that a difference in 2 Megapixel makes any difference other than to take up more room on your memory card. And having just read this I think its confirmed
http://www.kenrockwell.com/tech/mpmyth.htm