Geraniums are hardy but not as seedlings. I'd wait until the weather warms a bit to harden them off. Setting them out when the weather is cold will just slow down their growth.

From your website--it doesn't look like they are in separate pots. I'd take the time while you are waiting to put them in separate pots. Otherwise their roots will be so tangled you won't be able to get them apart. They are a long way from flowering. I start my geraniums in February and they are just starting to bloom when I set them out in May

Hi there, ok, thank you I will repot them but I am running out of room! I never anticipated that almost all of them would sprout from seed. I then guestimate that they will begin to bloom in June since I planted at beginning of March. Do you recall how many leaves they have before blooming sets in?