Thank you very much for this advice. I should have asked sooner - I think this would have been the best way to go... but I couldn't wait so now I will just have to hope for the best. My pup is coming next week.
The other thing is that these pups go fast! I talked to the breeder for the first time on Wednesday evening when there were 3 pups available. By Friday morning they were all gone! It doesn't leave much time for reference checks (or incentive on the breeder's part). From the research I've done, it is often like this unless you are prepared to pick your breeder before there are pups and then wait for months till the pups are born and ready.
Fortunately, after I made the decision, my boyfriend found that a colleague of his from Ohio knows this breeder and says she is very good. So I lucked out!