Oh nos! For betas, have you tried contacting the people who signed up in the beta section here? Also, you could try The Beta Branch forum - the ladies there are super awesome and we need more people there, but then again I don't know who'd be able to help with such a crunch time-wise right now (do check them out for next year tho!!).

We can try posting on the HBB tumblr and advertising for emergency betas, you can try posting in the help comm for some help?

There's also this site called Hemingway (http://www.hemingwayapp.com/) I just recently discovered thanks to tumblr - I haven't used it yet, but I'm going to this weekend to help me self-edit the last chunk of my fic. Maybe try that too!!