Wow that's exciting news! KFX for you all!
I think your plan sounds just right, although I would be looking for the fade in (sometimes you get faint positives for a couple days before you get a really positive on an OPK) to make my plans. I think you're on the right track with the "night of, next morning, next night" plan, I'm afraid three days after an OPK will be too late and the egg will be dead or you run the risk of an O+12 timing.
If you can, try to convince him not to "relieve himself" for at least two days prior to your attempt to keep his sperm count high. It shouldn't be a problem to DTD three times in a row (can potentially lower sperm count) as long as he is not releasing frequently beforehand. For best numbers he should release every 3-4 days, no more and no less.
I would for sure take Robitussin around O
http://genderdreaming.com/forum/show...N-TO-TTC-A-BOY and female O before every insemination if that is feasible. This is particularly true if you go with Clomid because that can make your mucus hostile and sways pink because of that.
http://genderdreaming.com/forum/show...hp?1191-Clomid
If you cannot get Clomid, soy isoflavones may be used in place of Clomid and may help you to better pinpoint O.
http://genderdreaming.com/forum/show...-girl-or-a-boy!