Thank you for all the replies! They've been very helpful. :)
For PreK, we're doing a sort of modified Before Five in A Row- some books fro the BFIAR list, some my choice, and activities to go along with each book. Lots of play, science experiments, and math in real life (recipe measurements, sorting, skip counting, etc).
I think the BFIAR books are nice, but seem a bit young for my daughter. I think FIAR books would have been a better match.
If I had to start over again for PreK, I would do Wee Folk Art Simple Seasons. I love that it's seasonal, and the book choices look interesting.
I purchased Oak Meadow K for next year, but was uncertain on when to use it because my daughter already knows above and beyond a lot of the curriculum. However, I really love the philosophy behind how OM is structured, and decided to use OMK next year, along with WFA for enrichment.