just get Ardennes or Pacenti's, they actually are around 450g... or Archetypes, which are 470g and half the price.
If these are going to be winter wheels and racing wheels, I would be thinking about having a cheaper rim (as they will wear faster) that is easily available to replace and a better hub. Hope to Archetypes would be perfect and plenty light. It's going to be pretty annoying having to import a rim every time you crash or need a new braking surface.
Racing wheels now, winter wheels later. Ardennes and Pacenti's don't have to aerodynamic advantages of the Flo 30s, and apart from the Ardennes+, wihch are hard to get hold of rim only, Flo's are wider. To be honest I would rather focus on a wheelset that performs well in all conditions rather than be bothered about the ifs and whens of crashing or wearing through them. If that was the focus of wheel building we'd all be on Open Pros.
Bit too rich for me at the moment...
Racing wheels now, winter wheels later. Ardennes and Pacenti's don't have to aerodynamic advantages of the Flo 30s, and apart from the Ardennes+, wihch are hard to get hold of rim only, Flo's are wider. To be honest I would rather focus on a wheelset that performs well in all conditions rather than be bothered about the ifs and whens of crashing or wearing through them. If that was the focus of wheel building we'd all be on Open Pros.