Would a configuration like this using 4 sols not work?
Probably be a good starting point at least, and a fifth could be added in the center installed perpendicular to the others if more is needed.
4 sols would be more light than 2 radions for sure. If it's purely spread you're worried about optics can be changed from 40 to 70 and the units can be lifted higher but at the cost of lost intensity.