I would have to second the Premier1 fencing. that stuff is so great for an easilly set up virtually impenetrable fencing (if you have it electrified...LOL I also recommend a lightning arrestor) My dogs are 160lbs and they wont go near it...one shock is all it took. it is about $1 a linear foot. and the fence they make for poultry has 3" openings that no fox can get through. I cant gush about the product enough. We had a fox problem last year and once we encosed our area with this fencing, we haven't lost a single bird.
I would recommend 24" min under the coop for air circulation and so you can easilly shovel out the yuck if you need to. and also so the chickens can get under to scratch for bug larvae and to get in out of the rain. 1" mesh bottom is a great idea but personally, in our coop we have a solid bottom and use "sweetPDZ" which is a crushed mineral used as a stall refresher sold at Tractor supply in bags. When used in a chicken coop it is scoopable like kitty litter and really keeps the smell and moisture down if that sort of thing is an issue. and it is safe for the chickens if they eat it. it is about $10 a bag, though, if you are on a tight budget.
welcome to the chicken adventure!
I would recommend 24" min under the coop for air circulation and so you can easilly shovel out the yuck if you need to. and also so the chickens can get under to scratch for bug larvae and to get in out of the rain. 1" mesh bottom is a great idea but personally, in our coop we have a solid bottom and use "sweetPDZ" which is a crushed mineral used as a stall refresher sold at Tractor supply in bags. When used in a chicken coop it is scoopable like kitty litter and really keeps the smell and moisture down if that sort of thing is an issue. and it is safe for the chickens if they eat it. it is about $10 a bag, though, if you are on a tight budget.
welcome to the chicken adventure!