Jim, if you can manage to order one, Folex wheels are the most cost-effective way to reduce the weight of your wheels. They are not sold in the US, and there effectively is no US distributor at the moment, as far as I can tell.
It really won't make any difference in terms of how fast your bike will go. In fact, the original wheels have 24 spokes, and therefore provide more of a fractional advantage than you would get from 28 spoked Velocity rims laced to lightweight hubs. What will make a lot of difference is going with a thin tire like the Stelvio or Kojak. I don't think either of these tires are super safe for inexperienced riders, as they are so small they can get stuck in storm grates.
Jur, nice disappearing trick. I see what you mean about the hub flange. Assuming my partner's 2006 monocoque has the same forks, there is just about 4mm of clearance. My cross-laced Chris King hub fits with still a bit of room.