First off the hoop house looks great.
Now for more free advice.
Not for sure about anyone's area but an electrical supply place is where you want to get this stuff.
Not the big box store.
Also depending on the area you are in the supply houses have different things.
I liked to went nuts trying to find things in Austin I could get any day of the week when I lived in an area that was heavy industry.
I would normally load up 2,000 feet of 3/4 EMT in my van at one time.
Then there are the fencing supply places to look for things also.
One time I was going through all of the receipts that a guy turned in with his expenses for the month.
Everything was from Home Depot.
I almost died.
The poor kid just didn't know any better.
Worth