I know you are obviously a fair way through your build but have you considered grain father, Braumeister, Robobrew. All work fine from a 10A gpo.
To be honest, ive never considered that kind of brewing and probably never will.
Its just not interactive enough for my liking.
Ive hung out with mates with 1v biab setups as wel and i have to be honest - i just find it boring.
I want to build (have already built) a brewery and then make beer with it.
Now i want to build - and understand - a relatively simple electrical system to run that brewery.
One day I'll probably teach myself how to code and make my own arduino or similar type automated addition to that system.
The challenge of taking on a subject i know absolutely nothing about (eg. Electronics) and asking dumb questions and finding out about all the things that i need to learn in order to achieve my goal appeals to me on so many levels.
Its like when I decided i want to work for myself. I taught myself about accounting and business management and just went and did it.
Ive been self employed for 5 years and im happy and more prosperous than ive ever been.
Same as when i decided i want to make my own bacon and salami. I knew nothing in the beginning. So i bought a welder, knowing nothing about metal work.
I taught myself how to weld, then i built myself a kickass smoker out of and olg LPG tank. Then i found a free range pig farmer, made friends with a butcher, built a smokehouse and a temp & humidity controlled curing chamber and now i butcher my own carcasses (pigs and lambs) and ive just cut a deal with a group of dudes that hunt wild deer in the high country to cure and smoke this year's catch.
It was never about taking the easy way or getting cheap salami - it was about learnig a completely new set of skills and meeting people who had those skills and learning feom them and living a particular lifestyle.
I struggle to sit still, i hate watching tv and i need projects to keep me sane.
If i just wanted to drink beer, id go and buy some.
PS search YouTube for "how to make a sandwich from scratch ". That guy is a deadset ******* legend