Congratulations on your first grow! Keep up the good work and have fun. All my suggestions are meant to be positive, first time anything can be stressful, not trying to add to it.
Next time after you pop your seeds in water for 24/48 put the paper towel in a ziplock.
Those 2 lights won’t be enough for your 4x8.
Couple ways around that, get a small 2x4 tent just for germination and use those lights in there. You could work that into a perpetual grow if you eventually do light cycle seeds.
And lastly check the direction of your air flow. Do you have additional airflow into the tent? Clogged pre-filter shouldn’t increase the pressure in the tent.
Just me trying to help.
Keep up the great work.