“Pimping my DC power supply”

Hi all:

I hope I don’t offend anyone in the title of this post, but I am sincere in getting opinions on what kinds of functionality I should include in the power supply that I am building.  So let me explain:

My project consists of putting (4) ATX (brand-new, each 380 watts advertised) power supplies together in an effort to:

1) Allow me to achieve a 48 volt supply with considerable amperage to drive 48-volt LEDs at sufficient current to adequately power an indoor LED array to grow produce indoors.  I reside in Oregon with my wife and she is especially fond of home-grown tomatoes, along with other crops as well, such as peppers, etc.

2) To provide me with a power source for my projects: I.e. arduino, rpi, etc.

3) Also after getting my HAM radio License, I am thinking of using it as a portable DC power supply for my mobile radio when I am away from the vehicle. When I start to think of this functionality, I REALLY begin to day-dream of things like: ...”well should I include incorporating solar panels into my design?”....

4) Also I would like to find out about what folks think about the type of over-current protection I should use on the DC outputs.  I would like to use some kind of resettable circuit breaker than fuses for the individual DC outputs and I would like to use some of the newer, Hall-effect sensors because they don’t rely on series resistors to measure current. I am comfortable designing my own series-sensing overcurrent, comparator-based current protection but I have no experience with the Hall-effect sensors (a la the AC713, I believe).  Would these devices act fast enough to do the job quickly enough in a circuit breaker design?

5) Also I would probably put some USB ports on it as well, along with some extra AC outlets too.