I should also add that Photek Softlighter II 60" is not a bad idea and it is cheap. The light is relatively uniform, tho not as uniform as Octa.

They don't make it any more, but Westcott Halo 54" is another good stuff. This light makes hot center and gradual falloff. Beautiful light. If they told me they would discontinue I'd buy some more.

Sometimes, there is nothing better than hanging ripstop nylon fabric from the ceiling (or use autopoles) and illuminate from behind it.