I looked at your page.
first: the xyz bike may have problems fitting the motor due to the extra top tube. A rack mount motor would fit just fine though...
Yes, Painted or anodized rims will wear out over time. Brake friction + Dirt. nuff said
Springer forks are less about ride and more about looks in my opinion. If you want a nice ride get a good mountain bike suspension fork. It will probably be easier to find one that fits too. All that said... I like the bike in picture 4 the best too.
I would definitely recommend getting a multi speed bike, not a single speed with coaster brake. Brakes are better and pedaling is easier with gears. That said, I bought a Micargi Cougar GTS (very similar to Tahiti, single speed chrome version with springer) from bikebuyers.com and I am very happy with it. It is a cheap bike made in china so it is a little heavy... I also bought a Kulana Moondog on ebay. Same story... Cheap but good reliable transportation. I'm afraid with all the outsourcing going on you may have a hard time finding a good made in u.s.a. bike that is cheap. Even Schwinn has outsourced to somewhere else now. I hope this helps.