Yes 1 kit would cover a whole wheel. You certainly could connect another but one seems to work fine. Here's a video where they show the different patterns....the music is annoying (turn down your speakers) but it gives you a good idea what it looks like. I'm only talking about the lights on...
The monkeylights weigh 65g each and one on each wheel is fine. The pro version can do animation but it's also $900 I believe. I'm happy with what I got for $50.
Very cool bikes. I really like the http://www.amazon.com/Monkey-Light-M232-Lumen-Waterproof/dp/B0081UDLDY I put on my bike. It makes you very visible at night and has some really cool patterns too.
I have the city rack on my ST1 and it does go over the rack arms. Sorry to hear your Axiom rack doesn't. I love the 1Up rack....it's well made and very easy to use.
ordered a suspension seat post today.....love the bike and the adventure that was picking it up yesterday. Thanks again Mike. Had a nice ride through the woods at dusk to a friends house....thank god that light is SO BRIGHT. I love my Stromer ST1!