I guess what I'm looking for is a Forum where James MacDonald and other sages would go to give each other advice.
As far as Beta Readers, how would you go about getting one. I have lots of friends who are published writers, but I'd hate to burden them with an entire manuscript or even 100 pages.
As far as a Sage thread goes, the Cooler doesn't have one. Our Sages are well-versed enough in the business that they rarely require advice from one another. Rather, they've graciously spent their time answering everyone else's questions.
You can look for beta readers in a few places. It's great you have some published friends, but that's not necessarily a requirement for a reader unless you want it to be. Other writers, while they do make good betas, also like to impose their stye (unconsciously, of course) onto your writing when they suggest revisions and other details. A good beta reader is one that reads often (so, don't pick someone who just reads the new Potter book every three years), enjoys reading, and preferably in your genre. Friends and family can be a great help, but also be wary of those who will tell you it's great no matter what (like your mother). Make sure whoever you choose wants to help you, and knows that doesn't mean giving you compliments rather than true criticism.
I've been frequenting this board for over a year now and I've formed some good relationships with people here. I know a few who might be willing to beta for me once I reach that stage. I know from their posts here on the board and their own writing progress that they're people I can trust to give me proper feedback. Depending on how fast you would like a beta reader, this is one place you can find one. (If you want to make a new thread under Mentoring or Writing Partners, that might me one way to get the attention of someone who is willing. I was a beta for someone by answering their request before I was a moderator.)
Also, don't be afraid to ask your published friends if you think they're right for the work. Start small -- send an email, ask if they wouldn't mind giving your first three chapters a once-over. Based on any recommendations from those couple of chapters, you might find repetitive grammar mistakes, structure or plot that needs work throughout the entire manuscript. If they're willing to take on the entire project, that's great too. But you never know unless you ask!
Good luck!