Yes, this is the unit you should be looking at to solve your problems. Keep in mind, when your ambient dew point is less than 50 degrees, the outside air will provide most of the dehumidification you need. That will be a function of incorporating your fresh air ventilation with your dehumidification requirement.
Look at it this way. Get the unit, tie it into your supply duct, and when you re-locate, you have the option to take it with you. Like Teddy Bear said, this is an all too common problem. Most builders either do not know or do not care about taking indoor air quality control to this level. Most homeowners just live to put up with the problems you are experiencing. It does create an unhealthy living environment. This line of thinking is still in its infancy anyways. Think about it, was just 60 years ago when a single light bulb hanging from the ceiling was satisfactory for room lighting. Look where we are now with illumination.