Is this brake cable alignment correct or problematic? I have a BB7 disc brake to fit to a CAAD10. Am I fitting this wrong or have I bought the wrong thing? 



It doesn't look like the brake cable lines up with the rubber bit - like this: 


I have not yet run the cables but it looks like they would need to bend considerably as they are supposed to come out of that hole in the frame.

I can post a pic of a different angle later, but how much bend on a brake cable is okay?

Will this be a problem? Am I fitting it wrong? Thanks.
Frames and set us do differ so sometimes you can't use the built in cable routing without making the cable bend at an unrealistic angle. This can be resolved by leaving a bit more cable so it can (in your pic) loop a little under the chain stay and then probably miss out that cable route. However, saying that, looking at the pic the rubber housing makes the angle look particularly severe and it probably won't be that bad.

I would offer up the cable and see how it looks and if you are worried about it I would just use some tie wraps on that section.

Alternatively there may be a better brake that suites so check what brake came as standard and see if the angles look any different.