You can't clone a female and get a male, thats just impossible, there was something else you said too.
Putting the plant into flower to find sex and then reverting it, this is going to put undue stress on your plant, the better way to go about it would be to take a clone, root it and then flower it to find sex, that way your plant remains unstressed.
Another way to go about it is to just keep vegging your plants until you are sure which are males and females and then cloning the relevant plant,