If the CF wheels have the spoke beds at the inner radius, then they're plenty strong to hang the bike by. If the CF is just a fairing, then be very cautious about hanging the bike from them. Hanging the bike from two hooks in the ceiling spaced apart the same distance as the axles puts the least force on the rims. Hooks closer together or further apart increase the force. Probably the worst typical case is hanging the bike vertically from one hook in a wall. The force placed on the rim can be several times the weight of the bike.