I run Kumho Ecsta's on my 350Z for street. It's mostly daily driven, and I can't tell the difference between wet and dry traction so it must be doing something right, right? I have no complaints.
lol
Congrats on the 260Z; hopefully you don't come accross major rust issues so you don't have to get some dirty patchwork done. Check in the hatch areas. What tranny are you going to use? Just curious
If it were me, I'd replace it... new springs new shocks/struts. Depending on what you want out of your 240z... you can get stock replacements or upgrade to getting performance ones.