Things are looking nice man.
If you are worried about the seed mix holding to much water you can always just water the outer ring of it, and not saturate it. Your soil should act like a sponge and draw it in towards the center.
I can confirm this. My GSC was eating more than some of my photos, and still looked like she wanted more. Haha just don't screw up like I did and dose a vegging auto with full strength photo flower nutes, or you'll get one of these.
That not my GSC (it's my bubba fucker) but the poor thing didn't know what the hell to do.
Haha on a side note I think thats what I'll call my unknown plant. Bubba Fucker (not so) Kush.