I'm making chocolate dipped  caramels and Pate De Fruit but humidity is always a problem in the summer. I'm thinking of having a box built like a Hillards cooling cabinet but instead of an AC it would be hooked up to a dehumidifier.   The intake would be on the inside of the box and would vent out. The room itself is cool so I don't see the need to use an AC.  

Thoughts?  Would this even work?

Why not dehumidify the whole room? To save building a box? 

That's not working during the humid months.  In the winter that's fine.

Sure, I mean buy a portable dehumidifier and store it in the winter? 

That's what I'm doing​ now.  In the winter, they dry out perfectly after a day.  In the summer, even with a dehumidifier in the room, after 6 hours they're sticky.  After a day they're unsellable.  I don't think the dehumidifier is strong enough to get the whole room so I'm wondering if a much smaller area might work.