That sounds fantastic
Good idea with ElectriCraft. I power by entire base from a top-tier Aurora battery (it holds, I forget...215TJ or something)
I've never made a PBR before. I don't think you can use Ammonia with it (unless you enjoy explosions) so the ammonium chloride argument won't fly with you.
I do know they were nerfed slightly recently.
Standard fission reactors on the other hand are still amazing. There's a thread here somewhere where I post my various designs (currently running with a 16-core that produces, well, stupid amounts of power)
Totally OT: Here's a map that shows our world gen (BoP + ATG), my secret nuclear facility is in the arctic region.
https://imgur.com/r7gqoxf
Given I really try not to test in creative, I figure if I screw up no one lives in the ice.