The other issue with an 8" rim is that with a 225 tire, you tire will NOT properly be able to protect the rim. There are a lot of posts of guys running 225's on their 8" rims to avoid having to roll fenders at all, but they leave the rim too exposed and easily scrape or scratch it. IMO the 235 on an 8" rim from everything I have read is perfect.
And thanks Evan for the Delti site - I just picked up some Kuhmo Ecsta SPT's for $104/ea., LOL - and those were my original first choice (but were $140/each+ on the other sites)!
Hell ya!! Glad to help out