Personally, I've never really cared for the over/under look...just me though. What I think would look good is 2 on top, but instead of spread so far as in the one pic, maybe have them linr up with the phaser emitters, or about the same as the 3 versions bottom 2...if that makes sense? Whichever you decide to do, they are all looking cool.
Thanx for all the interest.