I’m not a fan of the “spray multiple times a day” method, makes it too easy to over water and stunt your sprouts. I’d let it dry out til the cup feels about empty, give it 4-5 oz of water, let that dry out until cup is very light (may take 4-7 days), and repeat as needed. The soil should be watered fully (not just a little) and then allowed to dry, think wet/dry cycles, keeping them constantly moist is a recipe for disaster - over watering, damping off, slow and stunted growth.
About the ventilation, ideally you want warm air to be exhausted away from the tent so it can draw in fresher air. This becomes more of an issue as the plants get bigger. If just recycling the same air, you’ll have more trouble controlling temperature and humidity and CO2 levels will quickly get depleted as well. The smaller the room the grow tent is in, the more of a problem it can be.
I don’t mind at all and good luck with your growing.