Country style ribs... USA terminology differs from ours, so definitely talk to the butcher. One of our butchers gave us 'ribs' and 'meaty ribs', but which one of these an American would call 'country ribs' I have no idea.
Whats do you mean by 'best for leg joints'? You just want joints for x people? It's the 'best' that sounds a bit strange, as all legs will be equally good, one won't be better than another. Tell the butcher the nr of people the roasts are for and he'll cut the joints to fit that number.
All skin for scratchings... depends on whether you'll give any of the skin to the dogs. If so, ask for all of it (quite a lot will come in little bits), if not then only ask for a couple of A4-sized sheets from the back - it'll be plenty

(and hide the bathroom scales

)
The pork fillet (tenderloin) is best kept whole - it's a long thin thing, not suitable for steaks. It's delicious!
Bellies are large - a whole belly will not fit on a roasting rack easily - I'd have them cut in half for curing or for a flat (not rolled) roast unless you have a large oven and family
Crown roast... you may be better off asking for ordinary roasts or the costs of butchering will indeed increase, plus you can give the off cuts to the dogs.
The lights apparently stink to high heavens when boiled - haven't done it myself so it's just hearsay, we give them to someone who has dogs and ferrets to boil them up for them.
Do you want the kidneys to go in the dogs' pack?
In our very first year of having pigs I spent an awful lot of time learning about the various cuts and what kind of meat can be used for which dish. Finally, I proudly walked into the butcher shop with my overview... for him to take one look at it, promptly turn the sheet around and ask me what I wanted to each part of the pig in a way that made sense to him

(His list was much shorter

)
And you'll need two large freezers
Last but not least: I'm intrigued: why no black tails?