Thanks for the kind words ... but it is the community that does most of the important work here by being open and sharing.
50F is too cold. 55F is better.
Do you have a digital hygrometer in your work space? If not, get one. Ideally it will log the humidity over the course of the day and you can download that into a computer and keep track. If not it should measure the current humidity and the peak humidity over the past 24 hours.
A good starting working humidity is ~55%. The closer you can keep the entire work space at that level or below the easier your job will be. Humidity in the air will always condense on a colder surface if the humidity is above the dew point and the temperature of the surface is below the dew point.
Your best approach is to work to keep the ambient environment humidity (temp is ideally ~68-72F) as close to 55% as you can. You can do this with a dehumidifier - try and get one that exhausts the humidity into the warm exhaust air and then pipe the exhaust to the exterior. This will remove the humidity from the space and you will not have to plumb the humidifier to a drain or constantly dump buckets.
Just having a cabinet that lowers the humidity will not address your condensation problem. You can increase the temperature of the cabinet (up to 60F or so) but that will increase the amount of time required to cool. Increasing the airflow may help with that, to some extent, but you do have to remove the heat from the cabinet.
clay - http://www.thechocolatelife.com/clay/