510 Rim width suggestions??

I just bought a 1972 510 and im looking for some rims, preferably Panasport but im not sure what kind of width it can comfortably handle, i don't plan any heavy suspension mods other than coilovers and shocks, anyone out there have any suggestions for size and width and offset front and rear??? (id like a little lip action on the rear)??????

Thanks!

14x6"
15x6.5"

check out this site: http://kmhafer.datsun510.com/wheelFAQ.htm