I would get second characters going now if you want to use them this season. Once you stored around 5000+ deaths breath it should be easy to roll a new class on the account and get basic gear in all slots. a day or two later you will be enchanting ancient items.
This season I am trying to keep each bot to one class, rolling new characters and leveling to 70 so that I can have fully geared and skilled characters when I swap from bounties/TX Rifts/GRifts and of course some LoN test builds.
Try running a Wizard (some of the best DPS in game) and a LoN Bombardment crusader (easy botting, lots of EHP). Guides for botting both are available on forums.
Monks can be good for support builds and can use DEX gear that you likely already have other than Inna's set which is quickly gained through re-forging. Other than that, they are one of the weakest classes this patch.