Razorhead wrote:
http://www.nivlam.comif u farm with gap 9 at lvl 64+65+66+67+68+69+70+71 = 645718 sp
You also get sp from going 0 gap to 89 (you want to be farmed by 90 ofcourse)..So you can remove that amount from the total.
I'm not sure what your build is, but I would go to the cave anyway. Better spawnrate en same lvl (and higher) mobs. Spawnrate/killrate > exp/sp amount