Day 3; to freeze or not?

Dr. Foulk just called and told me that we have 18 embryos left out of the 25. 11 of them are not in the best condition and 7 are looking good. They base their condition on appearance and number of cells. The 11 that aren't so good only have 4 and 5 cells, the other 7 have 8 cells as would be expected at this stage. The embryolgist recommended we grow all 18 out to day 5, so that is what I opted to do. I plan on having three transferred on Monday and if there are any left we can freeze them at that point. But then if there are only 4 or 5 left on Monday and I use three, is it worth freezing 1 or 2? I guess we'll cross that bridge when we get to it. Till Monday people ;o)