Those are some of the ideas that I had as well. One other thing that I am trying to understand is how close does the correction need to be. From reading, it appears that nobody has two legs that are the same length. The body compensates for the difference. So in my case, what if I simply went with the shim the cleat (speedplays) with a pair of speedplay 1/8" shims? This gets me to .63cm. If I go with the third shim, I get to .95cm.

The other 'problem' that I am mulling over is what to do with other shoes. More precisely, if I fix the leg length problem on the bike and don't make the non-bike adjustments what problems will I create/make worse?