Goldfarming will bring you steady income but i find it less appealing now since higher paragons will (should) be able to farm as much as 400k gph plus the bonus of having found legendary/set items. If you are absolutely starting from scratch, i would buy some gold and get started that way, theres no point in waitiing to "slowly" build your characters, you want to be able to get to as high paragon as possible within the shortest amount of time then find the sweet spot in MP which your bots are comfortable botting in.