I would like some input on my nuc design. I will be making (and donating) about 30 of these for our bee club, so I want to make sure the details are right. These will be used primarily to transport bees from the south to our town. A couple of concerns: is the 1/4" space above the frames sufficient, is the 1/2" full width entrance sufficient for ventilation during transport? I have allowed for 1/8" space between frames to fit older propolised frames, is this enough?.