Looking at something like these. Put 4 in a neighbors barn at 14 feet high. With white floors and walls, these would be perfect.
https://www.amazon.com/LED-Republic...coding=UTF8&psc=1&refRID=TSGYYGA752TD7FNCRZ59
https://www.amazon.com/LED-Republic...coding=UTF8&psc=1&refRID=TSGYYGA752TD7FNCRZ59