I'm growing fig trees and gardenias from cuttings! Hopefully I will be able to sell them at the farmers market this upcoming spring!
My hoophouse is 10x20ft. I've had it for couple years so the plastic is in need of replacing. But I just slap some duct tape on the holes and keep on trucking! I purchased it from Amazon, they run around $150-$250.
For misting my plants I installed a mister used for above ground plants and just ran the hose above my plants attaching it with zip ties. I also have a timer for the water to turn on every 8 hours so I don't forget to water!