Sounds like you're coming along with your coop! Remember that if the nestboxes are so close to the slanted roofline and the roosting bars are lower than the nestboxes your chickens will roost in the boxes instead of on the bar. For protection from rain or hot sun we have a pop-up canopy over our little coop. I hate standing in rain to collect eggs or to chance getting the nestbox bedding damp. We bury the canopy legs into the ground about a foot to keep it from para-sailing in a breeze. We replace the cover once a year with a new tarp using ball-ties because regular replacement canopy covers are too expensive for our budget. For water we bought EGLU feeders (they hook inside the largest EGLU plastic coop). We hook it in our small coop for water so the chickens can't stand in it - we had a Leghorn that used to love standing in the drinking water and getting it all dirty. My wish list is to have a nifty little nipple waterer that attaches to a Rubbermaid jug but it's not cheap - about $70.
