I'd say it might be worth increasing the amount of advances, but only if you were to reduce the value of each one. Maybe consider +3? I'm not a big fan of DH characters getting their stats too high, they are only human after all. Or relatively close to it at least.
I'm the same, the game tends to break down when people get regular 90+ rolls and changes like this on top of +30 for maxed skills risks this.