This was my first plan, actually! I wanted to buy a 7x7 resin shed and cut some windows and vents. But I was stikk worried about humidity and ventilation because they get so hot in the sun. I wouldn't be able to cut out too much of the resin shed body because all the parts click together and if I cut out parts of the panels it could cause the shed to lose structural integrity...walls could become loose and floppy, etc. So I'm looking at wood instead now.Have you considered a plastic/resin prefabbed shed? You can get some good sized ones for 1000 or less.