Since my last post until now, I have gotten in about 3 more solo playtests and made numerous small tweaks here and there.
So, this past Thursday I finally decided to bring it to my local game group for a test run. We started a 4p game and got through about 2/3 of the game. Being the first multiplayer playtest, I was able to get a better idea for balancing and timing issues that I just couldn't see by playing solo.