Best way to sex and clone?

I only have 5 sproutlings growing right now inside under cfls, in a week or two i will be transfering them outside.

I want to know what the best way to sex them is. Should I clone and sex while their inside them just move the females outside tossing the males? Allright if I do it this way, can I throw the clones back outside the main plants?

And finally if you want to take clones, is it better to keep a mother inside the house to take clones or take clones from the ones growing outside?

i suggest cloning for sex. make sure you correctly label each plant. this way you can pull the males and you'd have an extra female to crop.
as far as better for mothers to be outdoor or not. im pretty sure it doesn't matter as long as you have a healthy disease free plant.