I want to make a mini bog for some VFTs and a small S. Leucophylla. I found a small cooler that I thought would be good for a container because since it is a cooler it protects the stuff inside (soil and roots) from heat and cold. It has a lid but I took it off. The cooler is 10.5 inches long, 7.25 inches wide, and 5.75 inches tall. Is this size container good for a mini bog?