Thanks, but it sounds like you have enough beta readers, and I don't know the source material.

But I do some critiques on /r/destructivereaders, and I know of many other websites that offer similar reciprocal critiquing schemes.

As far as writing courses, they're at least a good commitment device, and you might meet other people who can be good to know long-term. For people whose discipline and self-reflection are aided by a structured setting, they should help. For others, maybe not.