I have nestboxes underneath several of my poop shelves... I never whack my head, even under the lower poop shelf, because the nestbox is more than a foot deep, and the eggs are laid in the middle... so I don't reach forward all that far... but for the lower poop shelf I do have to squat down.I can bend it's just like I'd be crawling under the shelf, hitting my head on it, just seems awkward. I like the idea of having access outside but I don't want to cut into the wood any more than necessary. Should I put linoleum down on the wood floor?
Maybe do a mock-up... see what it would feel like
As to linoleum... some people use it... I don't. my oldest coop has a wood floor, I did paint it, it is still holding up.
My tractor with a wood floor is fine too (well, the wood floor in the elevated coop is fine, the roof, I stupidly made it flat... rotted and just had to be replaced)