Hello, new here. As promised I got my daughter chicks and what was suppose to be a 2 to 4 chicks ended up being 8. So while they are growing in the brooder I started building a coop. The coop is elevated 2' off the ground, 4'x8' and 30" at the peak sloping down to 24" on the ends of the roof. With limited head room can all the roosting bars be the same height off the floor ? How much higher than the nesting boxes should them be ? Is a few inches high enough. And lastly, will they have trouble climbing over the bars (2x3's) to get to the bars in the back or the nesting boxes ? This is all new to me. -Thanks