Buddypress disable account creation (for manual set up) problems

How do I disable users from signing up to buddypress? I'd like to manually set everyone up (I know this is a nightmare... but its the best solution for the moment).

I'm using wordpress multisite - and disabled registration, and allowed site admins to add new users (please see screen shot).

I've gone to create a new user - and this appears to be ok provided I tick the option to "Skip Confirmation Email"... however, I can't choose "Member" as a role... vital for buddypress use.

Also, if I don't skip the confirmation email - an email is sent to the user... however, it doesn't work when they click on it to activate (I'm assuming because I've disabled registration?)

So the long goal is simply to ensure that all buddypress sign ups are done by me.

Thanks,
Rob