I looked at this more closely, you linked to a portable Burning Man scenario. Using this in an apartment as you describe (especially for 4+ years) is a signifi

I looked at this more closely, you linked to a portable Burning Man scenario. Using this in an apartment as you describe (especially for 4+ years) is a significant hazard. Alligator clips and no enclosure? Non-outdoor rated cable running free down the structure through a window? Panel with no mounting sitting on the roof? Show this to a landlord and see what their reaction is.