Gingga
Striker
I do a few buckets in the greenhouse at the end of February for a nice early crop.No doll.
I would go with 4 per sack.
They're 1st earlies, so will be small compared to the main crop.
By the way, what variety are you growing?
Also, I know it's too late now, but I always put my 1st earlies in around mid March. They take around 12 to 16 weeks or so.