I would put the peel in vodka and let it soak overnight. Then dump the peels and vodka right into primary. No need to rack this to secondary IMO. You can keep it in there for as long as you want. 3 to 7 days should be good.
When you peel them make sure the peel doesn't have the white pith.
Primary: S'mores Stout
Kegged: Centennial Blonde, Dry Stout and Orange American Wheat