Compiled the advice of everyone here and elsewhere and came up with this:
1. Red onions, lemon, orange, herbs, and s&p in the cavity.
2. Butter and herbs under the skin.
3. Breast side down in an oiled sling (per Steve2's advice) in a roasting rack.
4. 18 min./lb.
5. Breast up for the last 30 min.
6. Tent and let rest 30 min.
7. EAT.
Anything I'm missing?