Rather than hold off until I have everything fine tuned to where I like things, I'm going to go ahead and convert the site to the new forum software next weekend. I'm planning on doing this on Saturday and the site will be down for the entire process. We'll be looking at approximately 5-6 hours of downtime.
I usually go to bed around 2:00 AM and get up at 11:00 AM. (Pacific Daylight Time.) Plan your conversion appropriately.