Most of the guys on here don't believe in scent clothes so you are going to get a lot of mixed answers. As for me that is my exact set up. I use my scent suit all year long so I bought a light weight version for spring and early fall, then when the weather turns a little colder I will wear the under armor underneath.
When it gets really cold, I will wear my overalls over my scent suit. I just try to keep the overalls away from human odors as possible before I put them on.