Anyone who knows about IUI's?

I am a 25 year old who has PCOS. I am taking follistim to produce follicles. Right now I have 6 that are possibles, two that are 18 and 16 and four that are 14. This will be my first attempt for an IUI and I know that It could take a few tries for there to be a positive. My question is, should I go ahead with procedure knowing that the results could end in multiples or wait and try for 2-4 follicles?