[SexyMF]

A few points:

* Parallel caps are fine
* To limit inrush current to the caps use a 10 ohm 10W ceramic capacitors which gets switched out via a relay after a moment
* Linear supplies are ineffienct and very heavy
* Bridge rectifies can be paralleled up
*SMPS are not very hard to build and can be made cheap. There are excellent high power low Rds switching FETs available. To stay within the SOAR curves you can parallel the switching FET.
*The SMPS road means you may design for varying loads and hence output voltages can be adjusted. There is also the possibilty of implementing a resonant mode power suppy which vastly reduced EMI.
*25V volts will not discharge through your skin. Install bleeder resistors.
*The stuff inside capacitors is carsengenic and makes a hell of a mess

Your power bill will be large. Althought I'm all for TECs phase-change cooling stands the most efficient for sub-zero temperatures.