Very good, much improved (i think)
If you have further trouble, this formula seems to help me.
1 monster- 2-3 turns to kill (on level)
2 of the same monster 4-5 turns (on lv)
etc...
(Change this formula to fit higher level monsters example: at level 70 the battles will be longer then level 1, but around the same ratio)
It's helpful in deciding how long the battle should take, if the battle is WAY too long then the monster is too hard. If it's too short, then the players are too strong.