Another Herms electric BCS 462 2 element brewing system

So basically looking to do the same build as BrewskiBroski

found here: https://www.homebrewtalk.com/f51/he...tric-bcs-460-2-element-brewing-system-300259/

And need some help/advice on build/schematic

50Amp Panel Mounted GFI
3 - 20 gal kettles
HLT and BK both have 5500W heating elements
HERMS system with the heat exchange coils in the HLT
2 march pumps
1Keezer
1Ferm Chamber Heat/Cool
BCS 462 to maintain temps and on/off for pumps
At any given time, I need to run 1 element and 2 pumps (never running both elements at the same time)

What i'd like:
A panel with switches for manual/auto(BCS 460)/off for each element and both pumps as well as an e-switch, master key switch and indicator lights for ferm/keezer

Wondering if its possible to use this for pumps, keezer and ferm:

http://www.amazon.com/dp/B007BKARFU/?tag=skimlinks_replacement-20

seems cleaner and expandable than going ssr route

And use this for 5V power: http://dx.com/p/5v-3-8a-regulated-s...ilver-145841?gclid=CL_e5piDqbQCFUKd4AoddH0AIg

Any input would be appreciated, thanks!