[Stock] The Flippy Rocket Challenge

[Quasar]

"If this end starts pointing toward space you are having a bad problem and you will not go to space today."
         
Your challenge: build a multi-stage rocket that flips upside down between every stage, for reasons that presumably made sense to the mission planners at the time.
         
To qualify, your rocket:
         
* Must be made from stock parts and flown manually. No MechJeb.
* Must activate at least 4 stages before reaching orbit.
* Your stage 1 engines must be pointing down, your stage 2 engines must be pointing up, and so on. Your rocket must flip once between every stage in order to qualify.
         
Rockets will be scored on a "payload-mass-divided-by-cost" basis, but feel free to do the challenge without numbers. These are... unlikely to be the most cost-effective rockets anybody has ever launched.
         
I have verified that this challenge is achievable by launching a mobile lab and mk3 capsule into orbit in the center of a 4-stage rocket stack. (twinboar, mainsail, mainsail, poodle). Had to briefly fire the first mainsail downwards to help me flip in the atmosphere, but otherwise an uneventful launch. Will provide screenshots later.

[CosmoCat]

  So, this challenge actually seemed pretty cool and unique to me; so, without further ado, here is my entry: The Acrobat Mk III!!

http://imgur.com/gallery/xH7al

[Ryu Gemini]

I don't know.  If I actually try to do it on purpose, I may end up with a rocket that actually flies normally for a change.