Jim: That all makes sense, thank you. I was considering that I would need a whole new front wheel (and thats why it is on the "maybe" list). The reason is simply that I've found that my iPhone 5, with GPS and music running, runs out very very quickly. There may be a better option, though, like a case with a built-in extra battery (as you suggested).

That definitely makes sense re: seats and and handlebar grips. The problem is finding different seats to ride on without buying them first!

Noglider: Pump is a definite, I just don't know what pump to get. So many choices! I do have a basic stock bell. No lights yet: Any recommendations on those or on a portable pump?