Or. make a frame like construction that bridges the entire room. with the uprights close to the wall on either side to take up minimal floor space. that will put the load down in the floor rather than walls. you can incoorporate racks or shelves in it too.
Or. make a frame like construction that bridges the entire room. with the uprights close to the wall on either side to take up minimal floor space. that will put the load down in the floor rather than walls. you can incoorporate racks or shelves in it too.
edit: make one side into a set of wall bars.
Added sketch