Neat coop, how many birds are you putting in there? On the vid you were talking about making a screen window to place in that cleaning door opening for the warmer months. I think it would be a good idea to make the temporary screen window, permanent. Depending on how many birds you are putting in there, ventilation is kinda critical.
As far as your floor goes, linoleum as it gets older, it gets brittle, it will crack apart where you are planning of having it hinge open with your clean out door. Also, I've read on this forum where a guy used linoleum, and his chickens had a great time shredding it to pieces. I would HIGHLY recommend a product I used in my coop, that I got from Lowes.
Blackjack#57 rubberized roofcoat. Unlike linoleum, this stuff becomes PART of the floor, not just a covering. You pour this stuff in there and push it around with a roller, and you will have a sealed floor you can hose out if you want. It totally seals all floor seams, as well as the floor to the walls seam. It is practically indestructible. If it can protect a roof in all extremes of weather, protecting a chicken coop floor is nothing to it. I've had this stuff down in my coop going on 4yrs, and it looks as good as the day I poured it in there. I bought it in a 4.75 gal bucket, but I've seen that it is available in 1 gal cans. Pour a couple of cans in there, and do your floor right, and fugetaboughtit.