New seedling, 4 days without water, ok?

I germinated 5 seeds and planted them 2 days ago. Now something came up and I have to be out of town for 4 days. When I leave it will only be 3 days since planting.
The strain is a northern lights variant. Planted in Miracle Grow Moisture control soil. The pots are in a fairly well sealed of environment with no air movement. I have a ventilation system that I plan NOT to run while I'm away to keep the moisture in.
Will the seedlings be alright for 4 days without watering? Or should I be scrambling to get some sort of drip irrigation system going?
Also, from what I read I don't need to be running the lights until the plant starts showing leaf's. Is that right?

Thanks.

if you keep the soil moist they should be fine. as far as air circulation IMO you need that changing of air to keep the stems strong to support your large (hopefully) colas. I keep my seedlings in the natural sun thru a window for the first week until they drop their first set of leaves than I go under the CFL's