I have done a lot of experimenting with vapor barriers such as space blankets and would not recommend using one at night with such high humidity. I will however say that you will probably be just fine with the gear you have and if anything an extra layer when going to bed might help. Fleece top and bottoms with long underwear should be fine along with a good hat. For additional heat, a hot water bottle might do the trick. (I may be a bit biased as I am a warm sleeper) I see many people new to winter camping carrying too much extra gear which is understandable but as you do it more and more you will find out what works best for you.
Wisconsin Winter Hang 2014 https://www.hammockforums.net/forum/...t=81556&page=2
"Familiarity breeds love.
We don't need to save nature we need to love nature.
The only way people will love nature is if they experience it first hand.
There is no better way to experience nature than participating in it."