You might not want to run 5100s and Eibach springs on anything other than the lowest 5100 setting. Your CV joints will be screaming after a couple hundred miles. Not to mention you'll definitely need new UCAs to get a half-way decent alignment. Looks like you got about 5"-6" of lift there.
Yes, from what I have heard, Toytec assembles their 5100 coilovers with 112-620 springs on the 2nd notch up. Here is a really detailed write up about the procedure (which I am sure you are familiar with now) but there are also some pretty meticulous measurements and good pictures of the CV axles: Toytec bilstein 5100 3" lift installed on 2007 4runner - Toyota 120 Platforms Forum.
RyanAllNight, did you install a diff drop kit?