Tim, it sounds like you have a lovely home already. If the walls need to look cleaner, yes white paint should be the answer because it makes the home look clean and larger. Remove any additional clutter you have in the home, the more organized the home looks the better it presents itself, perception unfortunelty is reality. Although we are in winter make the front entrance look inviting, plant any nice looking plants or flowers if your area permits it. Although buyers understand you are moving they do not like to see boxes, it makes a buyer feel you are hiding something. remove them. Contact a professional realtor in your area with experience, they can tell you what your home is marketable in your area.