Proper offset?

[math labs]

Hey everyone, I was looking into getting some rims already and i'm pretty set on getting some classic DRWs;

http://wwww.diamondracingwheels.com/TruckerSeries.htm

Now, the big question, in offset terms can i go with something near 0 offset? or do i have to go big like +45 or something, my FJC isnt here yet, but im already fittin to get some new wheels