Tree and herb runs are the best steady way for exp points. If you TRULY want to farm , do chain farming. That is the Best way to get continuous ongoing farming experience , in my opinion. Lots of good guides available. Once you are within 50M of maxing out do any mini game or extra experience gaining activity that grants farming exp. With P.O.F now it's so much easier than when I did farming. From 100M to 200M exp only took me a few weeks the old ways. Now it should be predominantly quicker. Good luck and happy farming.