I too love hub gears and have them on several bikes. Based on my personal experience I would NOT go with any Nexus other than the 8spd. I went with it on my Swift. Better yet go with the red label version if at all possible as it is more efficient. I have one bike with the red label version and one without. I can feel the difference.

As DaFriMon said you can customize a BF how you want and same goes for a Swift. I have several Dahons but what bothers me more about them is that their models change each year and your bike the next year becomes a throwaway and is sometimes virtually worthless as there is always something that seems to be the Bigger Better Deal in their design.

I personally built a Swift very similar to what you are looking for. I have a hub gear, rack, lights, fenders and more. You can go here to take a look at it. In these picks I don't have the rack on it but most the other stuff is on. I add the rack when needed.

http://69.16.211.161/showpost.php?p=2145518&postcount=1