Then, I started checking which applications wouldn't work. My biggest fear is that some unsupported legacy applications won't run and then I'm SOL. For example, I rely on iWeb to maintain my website. Fortunately it still seems to run.
I too was dependent on iWeb. I found that Sandvox was very similar and could import old iWeb web sites. See the
specifics. It is not 100% perfect, but might be worth it in the long run.