[welfare]

Little late here, but you can buy a sprayer kit from princess Auto for like 30$. Stained mine this past summer and it went great. So much faster than brushing.
Just need a compressor of course and long hose. You can buy a pad to push the stain in after each panel.
My fence is about 100ft total. Did both sides two coats. Took about four or five hours.
Just make sure to use the proper mask and keep your skin covered. And brush on anything that's within five feet of the house. Wipe off over spray right away. It comes off easy when it's wet.

And yes, make sure you do it at least two days after drying and allow two days to dry. So you really wanna do it in the middle of one dry week