I uploaded the text file of the coordinates of where to drill through the PCB, and where to etch it. One picture is for the bottom side, where the capacitors get soldered, and the other picture is for the top side, where the mosfets/diodes get soldered.
The JPG files are set up so that if you print them, they will be the exact size of a 8"x7" PCB. It's possible to use a 8"x6" board with some of the capacitors hanging over the edges at the top and bottom. I might do that, but then the coordinates would need to be shifted up a bit if you are doing some sort of CNC milling. If you are just pressing the ink directly onto a PCB, then who cares! haha!
The squares in the second picture mean that you have to shave off ALL OF THE COPPER INSIDE THOSE SQUARES! YUCK! That's the trials of using 2 sided PCB!
The third picture you can use if you aren't using 2sided PCB. You can avoid all that dang shaving of copper! That sounds good!
Here's a cool utility that I've found useful!
This Circuit Width Calculator and it seems to be OK with 3 ounce copper, as long as you aren't drag racing at 1000 amps or something, so I think 3 ounce will be fine.