Kicking around the idea of a Roller Cam Swap...

If you want more vacuum, you should not use the Voodoo cam, it has more overlap than the XE 268. 112 LSA is also NOT the way to go, unless you want LESS power.
What you need is a cam on 106-108 LSA, single pattern, but with less duration. More power with more vacuum will be a compromise, & the Isky 270 Mega would be the best bet.