youre looking to control the air, you gave your static volume (not really but close enough) of air but not your flow rate like CPM...which means there is nothing anyone can say as far as actually giving devices that is worth a crap on this topic for you considering dehumidifiers are going to be rated based on their flow rate (think liters per day)
controlling the humidity in your tent? control your lung room
controlling humidity in your lung room? control the temp in your lung room
and repeat on and on and on and on and extrapolate out
strongly disagree with the TEC advice below; a TEC works in principle by exploiting a voltage drop on a surface and removing said energy from both sides...long story short, your TEC output is just a linear combination of the drop, surface area of the plate, and the energy being removed.....aka any effect you get on the condensing side is going to come with heat on the hot side. past that, they are not efficient and will fail over time about 1000 times faster than any compressor driven device built in the past 10 years. there just isnt a way to meaningfully incorporate TECs to do this job without rippin a tent apart and mounting them into the fabric, then what? like you just dump heat into your lung room anyway and then the air has a higher capacity for moisture and you're just spinning your wheels not understanding what you're doing. just my thoughts