And don't take steps to fix things that aren't broken just because you speculate that a buyer might not like it. If your agency has low-priced inexperienced help, one type of buyer may prefer that. If your agency has high-priced experienced help, another type of buyer may prefer that. If there is chaff in the way the agency is operated, some buyers may want you to fix it, while others may prefer to buy it now and fix it themselves in the thought that they will be more efficient than you. The bottom line is to get a sense of what your potential buyers are likely to want to pay for.
Many people are far too free with a pen.
When you sign something, even if it looks innocuous, you are setting yourself up for the legal consequences, even if you aren't sure what those consequences may be. Even if it doesn't, the court may hold that the owner has some obligations with respect to the provisions that were included. So be careful with those letters of intent. There are many documents that a seller may be asked to sign. Often, it is the document that you are pressed into signing that is the one you regret.