Keeps 4 days refrigerated. Reheat in a 375°F oven for 12–15 minutes to re-crisp the skin; the microwave makes it rubbery. The meat pulls easily off the bone cold and is good in salads and sandwiches. Freeze cooked meat off the bone for 3 months.
Thighs have more connective tissue, which needs the extra heat and time to break down. At 165°F they're safe but chewy; at 175°F they're tender. Breasts are the opposite — pull those at 165°F.
Yes, but check them at 25 minutes. Without skin and bone they cook faster and dry out more easily, and you lose the crisp skin.
No. Salting the thighs and leaving them uncovered in the fridge for even 30 minutes does more for flavour and crisp skin than a wet marinade.