Take-home lessons and code from a factor-cluster analysis with imputation

Recently I was tapped to examine data from a survey of ~200 children to find if their learning preferences fell into well-defined profiles (i.e. clusters). The relevant part of the survey had more than 50 Likert scale questions The client and I had decided that a factor analysis, followed by a cluster analysis would be most appropriate.

I learned some things in doing this analysis, and wanted to share that and some relevant code.