 Once the repair is done, you want to be able to prove to the potential buyer that the repair was done under professional supervision and not just the combination of a bunch of contractors' opinions of what they think ought to be done. It's really a better way to go. It's kind of like having a pedigree on the repair. So I'd fix up the loose brick as best you can, but I really would get a structural engineer to specify exactly how to reinforce that part of the wall that's bowing. I think that's really important to protect the value in your home.