Oh, as for breed, I get mine from a friend who overwinters a breed pair. Dont recall the breed but it is a cross.
Also, my hogs are on pasture from about May till late Oct or early Nov. About 80% of their calories come from what is on pasture. Unfortunately I cannot overwinter so I have to give them feed to supplement to bring them up to weight by fall. And they need the vitamins and minerals supplement.
I can tell you this, my hogs have a more porky flavor than commercial store bought. While most found it to be fantastic, some have found it off putting.
You are correct in the difference between a lard vs a bacon hog. Unfortunately, over the past few decades hogs have been breed more for meat vs lard. I recall an article about China manipulating genes for even leaner hogs. IMHO, in a post SHTF world, a lard hog will have a lot more value. IMHO, it is not how many bullets you have or what tricked out rifle you have, but access to fresh water and calories will determine if you survive.