Change Register Text on page after submission of BP registration

I need users to go to a custom url upon registration. If they can't (and I've been trying for days to get ANY registration or login redirect to work and they don't, so please don't suggest Peter's login redirect it does not work, even though it should for registration and I've tried others too)

I would like to change this text on the post registration message:

Check Your Email To Activate Your Account!

You have successfully created your account! Please log in using the username and password you have just created.

Because I have email verification turned off, and it is very confusing to see that message. Also, the custom login message is floating to the top left of the screen and getting lost in my background graphics. I don't mind that message but it's in the wrong place.

Mostly please help with changing the text, what file is it in?