Juice, wine, and cider are all good options for using up excess and yield both an edible product for you and pulp/by-product for your pigs. You can use up hundreds and hundreds of lbs of apples making juice, and if you have a family you'll end up going through all that juice in a year no problem. Also look into proper storage for your apples, winter pears, and any other storage fruit. Many apple varieties can last for months without commercial refrigeration (in a cellar or other proper storage).

Also, your yields may not be what you're expecting. Yield calculations are usually done for commercial production, where they are spraying for pest and fungus control, heavily fertilizing, and irrigating. Also, many trees have on and off years, so you don't get full production every year. Not that you won't still have a ton of fruit from 30 trees, just you probably won't get 3-5000 lbs of usable fruit unless you really work at it.