2) the "I didn't get enough SP" way - Pick a level you want to farm at.  For
example, 47.  at 47, you will have put your last piece of armor on for sixth
degree. and you'll be easily able to take care of all monsters at your level.

At level 38, STOP UPGRADING YOUR MASTERIES.  Just make a dead halt and level up
the hard way.  When you get to 47, you'll have a gap of nine.  The problem lies
in that the last couple levels are going to be a real haul.

*easier method*  When you from 38-47 only level up one master and nothing else.
While you're doing this, start collecting cursed hearts for resuscitation
potions, or buy a couple skill potions from the item mall.  Level up with a
gap of zero, then when you hit 47, dump your master back down to 38.  The
levelling up will have gone much faster for purposes of getting your gear, and
you'll be able to farm all of level 47 for ...who knows how many skill points.