Just a couple things I wanted to respond to...
A Fundies class can be a high-stress situation....but outside of the class, having more refined skills makes the diving a lot more fun.
I can't say it's true for all GUE trained divers, but the buddies I dive with are a ton of fun. We plan our dives (sometimes it's as simple as "let's go in the water and play around for an hour", but other times it requires more thought and thorough planning), have a blast in the water, and offer feedback at the end of the dive (somtime's it's "your barrel rolls were freaking awesome today!" while other times it's "your light signals seemed erratic and I kept worrying that something was wrong, so you should work on smoothing things out"). Very few GUE trained divers I've ever met would call you out on dropping your knees a little or coming out of trim a bit (given a rather benign environment....I suspect it would not be the same in a cave or wreck)....not a ton of nazi GUE divers that I've met, though I'm sure they exist.
Also, someone mentioned previously that diving with other GUE trained divers before the class really does help. Additionally, if you don't have similarly trained buddies to dive with after the class, taking the class is likely not going to be quite as worthwhile, imo.
You do not need to go into a Fundies class having skills nearly perfected, but it sure does help if you know what good trim feels like and you can hover (motionlessly) and watch demonstrations and your buddies. IMO, sounds like a Primer class might have been better for you.
If you're not feeling too jaded about this class and this type of diving in general, do try to take people up on their offer to dive with them. The PNW has an active group of divers....as does Socal, Monterey, NY, and probably others. It really has the potential to be a lot of fun....it just sounds like you bit off more than you could chew in this particular class.
As a side note, six students (even with two instructors) is too many. When I took my class, my instructor suggested co-teaching a class with another instructor....I told him that that was fine, but that I would not be part of it. Two to three students and one instructor is good....any more is a cluster.