Back from the walk; quite pleasant now.
More grow lights and shelves is a good idea, the orangebox store periodically has some good sales on the plastic shelving. We’ve got several sets over the years for the basement. They are plenty sturdy for plants, tools and such. If you really motivated, there are pvc pipes that you can cut and customize a unique set shelves for your use. The pvc pipe glue recommends ventilation during use.
Well heck! *sniff* That's takes all the fun out of it! ;o)
Mmmmmm.....pipe glue....