Good Afternoon ASmitty!
First off...thanks for going through the Shaft Optimizer. Which of the shafts that it recommended did you like the best? If I had to guess, I would say the Project X 5.5. Am I right????
To expand a bit on the numbers....
Head Speed - rather obvious, maximum head speed value during the swing.
Tempo - This measured what kind of transition you have on a scale of 1 to 9 (one being the smoothest and nine being the quickest). Think of Ernie Els' swing vs. Nick Price. No number is better than the other, just personal tempo.
Toe Down - As it sounds, this is how much the shaft bends down towards the ground during the swing (again, on a one to nine scale). This won't have a big effect on lie angle, but possibly a slight one. This is why we recommend one you find the proper shaft, that you use the lie fit club to take a lie angle measurement WITH THAT SHAFT.
Kick Angle - The amount the shaft bends forward (towards the target). This helps us to determine the proper bending profile of the shaft for you. For example, if you need something with a stiffer mid section, etc.
Release Factor - When in the swing the shaft itself actually released the head. For a couple of extreme examples, think of Sergio Garcia and David Toms. Sergio releases VERY late, and thus needs a firmer tipped shaft. Toms releases earlier, and so he can use a softer tip to deliver more power to the ball.
Again, you shouldn't think like "I need to lower my kick angle" or "I need to raise my release factor" or anything like this. None of these are swing faults, they just require different bending profile shafts to give you your best results.
Being that all of the measurements are on a 1-9 scale (with the exception of head speed), you are pretty much in the mid range across the board. The reason that I guessed that you would like the Project X is because your tempo is kind of in the mid/low range. A player in that range needs a mid-light shafts (Project X is 115). Your release factor is also a four, and typically the tip section of that shaft will fit well to that player.
If the Project X wasn't the winner, I'm curious what was...everyone feels the shaft load and unload slightly differently, so let me know!
Hope that helps to clear some stuff up!