I know the rules are hard to find online sometimes. If you don't have the little pamphlet, private message me your e-mail addy I can send a .pdf of them. They are somewhat straightforward and cover everything you need to be aware of.
Let me answer in reverse order - That is a good plan for the brisket as long as the burnt ends are very good to excellent when you sample them. Some of the first advice I got was to not plan on turning them in and stick with slices only. If you turn in both BEs and slices, judges will use a composite score for taste and tenderness.
The previous Pork rules included a weight requirement, and requirement for separating. For example, cooks might isolate the MM by trimming so it could get more bark, but it was still connected to the roast. After it was cooked, it could be removed.
The 2020 Pork Rules:
PORK: Pork is defined as Boston Butt, Boston Roast, Picnic and/or Whole Shoulder, weighing a minimum of four (4) pounds at the time of inspection. After trimming, pork shall be cooked whole (bone in or bone out), however, once cooked, it may be separated and returned to the cooker at the cook's discretion. It may be turned in chopped, pulled, chunked, sliced or a combination of any of those.
As long as the pork you turn in is from the "shoulder" as defined below, the current rules don't have any reference to weight, certain muscle groups you elect to turn in, or how they are presented. One thing to consider is that if you turn in pulled, sliced, and some plugs... the judges will sample some of each and give a composite score, so make sure they are all good enough to turn in.
The 2023 Meat Rules:
The Four KCBS Meat Categories:
CHICKEN: Chicken includes Cornish Game Hen and Kosher Chicken.
PORK RIBS: Ribs shall include the bone. Country style ribs are prohibited.
PORK: Pork is defined as Boston Butt, Boston Roast, Picnic, Collar (aka Cellar) and/or Whole Shoulder.
BEEF BRISKET: May be whole brisket, flat, or point. Corned beef is not allowed.