If it isn't too much more expensive, you might like to think about adding IUI anyway. OI can play silly buggers with your CM and make it harder for the sperm to get where they need to be. Too many OI cycles can play silly buggers with your lining. I think IUI adds about 10% chance?
Wow that's really interesting. My FS just dismissed IUI when I asked about it because the sperm is fine. Might have to ask again if I get the chance. Thanks for your input.