OPK, and donor sperm...

Tinna
So, I have a question. My wife and I are using donor sperm so it's a little harder to BD everyday. So, when, and how often should we inseminate? Last month when I had a positive OPK first thing in the morning, we received our donation the next morning. Was that too late? Should I try to get a donation before I even get a positive OPK?