Mindy, a larger, deeper container might work better for you than cell packs. Cells are so tiny that it can be hard to keep adequate moisture in them once weather warms and lids come off. Dry seedlings = dead seedlings. There are people who have been successful at it, but you make a lot of work for yourself. They might need to be watered several times a day. Also, their light weight makes them prone to blowing away, so you'd be wise to weigh them down somehow. And remember, the seedlings need adequate head room.
I don't have a list yet. I'll wintersow echinacea for sure. (I lost quite a few last year to aster yellows). My husband will be gone on several business trips later in the month. I'll probably get started then. And definitely tomatoes and some annual flowers closer to spring.
Karen