Well, I see that you are using all graphite shafts...which makes this a lot easier...you really don't have to worry about the head weight, but the shaft weight and kick point is the thing that you REALLY have to pay attention to. Frankly they're easier to get too, Adila should have the voodoo's weight and kickpoint up on their site and Mitsubushi should have the diamana shaft up on their site too...As long as the new shafts are cut the same way, which they should be if you take your clubs to a known dealer. If your trying to change where the kickpoints are in the shafts, to change trajectory, then I would highly suggest going out to a golf smith or golf galaxy and hitting different shafts and see which feels comfortable for you because even though the weights might be the same it could feel heavier or lighter.

I mean might as well get it done correctly so you don't have any regrets later...