Get lvl 80 mining by only mining pure ess. But since you need oak logs for plank making i expect you coud also get your starting cash trough mining p ess, flax picking and when you have enough cash to buy 2k oak logs + money for plankmaking i advice to go on with that since its the fastest way to get money without skill gaining. There sure is one, but i dont know anything about a plank making bot since there are better ways trough certain skills. A banhammer? I really doubt they monitor plank making alot. I wouldnt worry, but then again i have no experience on botting planks. Maybe someone else can answer that question better then i can.