Flowers for winter hanging baskets

I'd like to try growing my own winter bedding plants from seed this year. I've got plastic hanging baskets with holes to plant flowers through the sides.

Which flowers would be good for this? I was thinking of winter pansies but would these work in the sides?

 I've got lobelia round the side holes for my summer baskets, & petunia, box and ivy in the main bit and am really pleased with the effect.

Thanks. You can't beat pansies; they've got such cheerful faces!