It really depends on the difference in strength in each ball in your line up. What I like to do is find a fresh pattern some where and run through my Arsenal and map out the differences in hook of my equipment playing inside and out.
If yours plays like it should you probably can barely use your Invasion for a game, because a VE is more than enough ball for any house shot. There is still a decent gap between those two balls that you could fill with a ROF or Hy-Road (if you adjust the surface). I think the Second Dimension would overlap, but if you bowl on sport patterns overlap wouldn't be bad considering the function the ball would serve. It would give you a very strong pearl to use once you've burned up a spot of friction with the Invasion. This could be accomplished with the VE, but I usually like to keep the shine off of Hybrids because they make such fantastic benchmark balls.
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