Well we ended up going today....and it was PERFECT!! About 75 degrees with no humidity and the place looked deserted! I walked onto The Beast, Vortex, Flight of Fear, Invertigo, and basically all the non-coaster rides. My wife and daughter rode the Adventure Express 7 times, bringing their AE ride total for the year up to 40.
Thanks again for all the suggestions, and a special thanks to Terpy for keeping an eye on the forecast for me!