With a Mo9, I'm assuming you'll be using strikes, yes? With strikes, you wont be making huge numbers of attacks per round, but instead one huge one. As long as you're not focusing on Stone Dragon, which needs you to be in contact with the ground, I'll say that a battlejumper getting that extra x2 damage or trip attempt on one almighty hit, if you can max that jump skill (which you should!), will combine nicely with powerful strikes.
Then again, I have a sort of bias towards battlejump/leap of heavens/leap attack, so yeah...