Does anybody have an idea about how long the wait time is on the novella reprints? I missed out on the last two books, and Ire of the Void has been sitting in reprint limbo for at least six months. Is that what I should expect for the last two books?

I would think so. 6-8 months for a reprint.

I know some people have done a better job of timing it out than I, but that should be a pretty good rule-of-thumb.