Prequel novel is now at 100%

Time to start the editing process.
This is going to be a very good tale if I do say so myself.
The question that remains – what is the best order to read it in?
Book 1, 2, then prequel?  Prequel first then 1 and 2?
I know that many of the folks who read Book 1 and 2 and then the prequel are going to want to re-read 1 and 2 again with all of the reveals that occur in the prequel.  No hints – sorry.  😉