Yeah, that sounds alright. Basically the aim is the achieve something that releases the moisture slowly or slows down the evaporation so it would last a while increasing humidity without drying out quickly like misting does. Misting usually only moistens surfaces of everything rather than holding moisture and increasing humidity for a period of time. So it needs to be rather thick, absorbent, and wet right through. The additional dry sock on the outside is because I always prefer everything dry. Safer too. As for size, you might have to play around with those.