Well, I would suggest that you simply keep a 3 level gap while you are grinding, instead. You should get all the SP you need that way(especially if you are using only one class), and you'll be able the level at a decent pace.
You should also check this thread out if you have any other questions regarding SP and farming:
http://www.silkroadforums.com/viewtopic.php?t=13876
It's old, but I found the links to be helpful.
Hope that helps, and good luck.