Originally Posted by Boerderij_Kabouter
My advice is to spend the time and really plan out your design on paper. Once you see it on paper, it is easier to critique your design, cut fat, and save money.
This is GREAT advice!!!
I too would like to add. I spent over a year designing my system, down to the tippy tun the flow of wort and electrical design and I can tell you I made some mistakes, like the height of the system. I wish it was about 10" taller. I wish I had put in a 1" BOTTOM drain in the boil kettle and things like thermowell placement, ETC. If you are going to build a system from scratch, do your homework, spend some time looking, thinking and asking "WHAT IF"!!! It will save you a bunch of cash and you won't need an upgrade for some time.
I would suggest nothing smaller than a 10 to 12 gallon system. You can pump out a ton of beer w/ a system of that size, I do LOL!!!. Make it EASY to clean because you will spend more time cleaning than you do brewing if you don't.
Good luck on the system.