750 watts of LED over 25 sq.ft

An overview of the working bits. the light rack was originally built for 3-50" Rapid LED Indus bars running at 250 watts each for a total output of 750 watts (850 watts at the plug). The Indus bars have performed well over the past two years however lately they've been showing their age and I've lost a few clusters here and there as well as a several drivers. Rapid has replaced this line with their DIY COB kits so I'm upgrading as the indus bars degrade. Each Cob is running at 50 watts so...

750 watts of LED over 25 sq.ft