Before putting your house on the market, attend a few open houses at similar properties in your area. That will give you a firsthand basis for comparing your home with competing properties. It's also a good way to take the pulse of the local market and to spot some of the selling brokers who are active in it.
One problem in using older-style pegboard hooks is that they tend to pull out when the tools are removed. One way you can solve the problem is to insert them into the pegboard and use a hot glue gun to fasten them in place. In a minute or so the hooks will be fixed in place, although you will be able to wrestle them loose whenever you want to rearrange your tool storage. Another solution is to buy newer-style hooks that will lock in place with just the turn of a screwdriver.