Circuit design with multiple voltage levels
IMO it would make much more sense to use an SE-600-24 and use buck convertors to create a local +5V supply for your LEDS. 

You have the potential to need conductors that will support many 10's of amps (if you have 4-5 major wiring runs) if you use a 5V supply and it is best to get this done at the highest voltage and lowest current possible. Running 5V any distance you will end up with significant voltage lose, and may end up with signal ground problems for your LED data. 

There are plenty of 2-5A Buck convertors like this, this (I've used a bunch of these and I like the input capacitors) or this available at low cost that would support groupings of up to 50+ of your LEDs allowing much smaller wires to be used in your installation.