I farmed penons from 52-60 with big gaps from the start of september so in about 3 months I ended up with just over 135,000, I got about 2k a day, pretty boring at first but you do get into it and just accept it in the end, I kept thinking how much I knew the cave sucked that was a great incentive to keep on going, but the area was usually quite empty when I played but I'm very glad I didn't make the same mistake I made with my str character and ended up too high to grind anywhere but the cave.
I'm 62 now with 70,000 but it's enough for all 3 magic trees to get all the skills maxed to 70 and probably a couple of spear skills to 70 too, anything else I need I can get leveled up as I do 70-80.
http://youtube.com/watch?v=KgtrbFi9T_A
You can see in this video how much the hard work finally paid off, with max skills and 50+ int in blues the dmg is hell scary lol
Another good thing about the farming was that I had enough time to spend on maxing my gear out a lot, just kept using stone after stone, I ended up with a parry ratio of over 300 at a 5x level.