All of the mining/botany profiles I have posted require 51 to use. Otherwise you cannot see the nodes. I didn't make any below that as I was way above 51 by the time the bot had movement so I had zero use for those nodes. They are the nodes right outside of the town in coerthas western highlands. You could level off of anything to get to the point but I'd say the level 50 leves will be the fastest.