@Lolo I cannot say that I have worked all of this out.
At the moment I am mostly relying on brisket for fat. I have a local butcher who delivers and has been pretty good at getting unusual things for me (sweetbreads, calf livers etc) and I ordered an untrimmed on the bone brisket cut into 2kg roasting pieces. I roast it at 160C in a romertoph, though I am sure there are other ways.
There are pretty clear layers of fat and lean in the meat. I could not get figures for untrimmed brisket, but could get them for cooked brisket lean and for separable beef fat, so I use them to work out how much of each I need and cut blocks of fat and lean out of the roast accordingly.
The brisket I am eating at the moment is more than 2:1 so someone meeting the 2:1 ratio would be able to have a little bit of lean meat alongside it. At the moment as I am not meeting the PKD's 2:1 ratio but only 1.2:1 or 1.3:1 I can use the brisket for about half of my protein and all of my fat.
I have also use lard to spread onto slices of pork. And have eaten lamb breast which seems to have a similar fat to protein ratio. The pork belly I have bought recently has been too lean, but it is usually similarly fatty.
I have also been considering making some sort of confit, to see if that works as a way to make rendered fat seem more palatable.
Amber O'Hearn has some ideas on her site
http://www.empiri.ca/2014/11/experiences-of-five-year-carnivore-part_11.html
including blending fat and bone broth in a blender. I know she has also mentioned buying pork side which is the same cut as bacon but not cured.
I have read of other people ordering trim fat from their butchers, which is something I plan to ask about next time I order meat.
I don't think deep frying would do much good.
I cannot see anything on the paleomedicina site about being able to have herbs. I am still watering my savoury, rosemary, sage, oregano and thyme but am wondering what to do with them.