It doesn't hurt to ask a contractor if they can lower their price. Or you may want to ask if there's any part of the job that you could do that would reduce the cost. Sometimes a homeowner can do demolition or prep work and save a few dollars. Competent contractors should be willing to provide a list of past customers who will recommend them. Take the time to call a couple of people on the list.
Most people are willing to spend a few minutes discussing their experience.
Once the job is started make sure that you get the proper documentation from the contractor showing that they've paid for materials used on the job. You may be responsible to the supplier if the contractor doesn't pay. You don't want a lien on your home. Without the proper releases you could end up paying both the contractor and their supplier for the same materials. It sounds like Anthony has a number of repairs and changes planned for his home.