If you're doing 1 gallon and want to try all grain, I would suggest giving BIAB a try
As for an apple ale, I've never brewed one, but if I were to try it I'd add some apple cider to the primary. Maybe 75/25?
Sent from my iPhone using Home Brew
Bottled - Andes Chocolate Mint Stout, Bazinga's Berliner(conditioning), Citrus Blonde V2(conditioning)
On Deck - Dragonmead Tripel Clone
Future Brews - Deschutes Mirror Pond Clone, Amarillo Session IPA