Calin,
So why didn't you wait till spring to buy?
If you got them, and wait, you may have only 1/2 the success rate. Do they recommend where to place the seeds until ready? Like in a cool dry place.
Can you get your hands on an old fish tank with hood/light? It could make the perfect seed starter setup.
I do see your dilemma. Hope it works out for you.
Best of luck,
Stush