I vote for doing the Dinner (Lunch) Package. However, doing so does not guarantee a good seat, just a seat. So you still need to get on the Package Line a little early to get a good seat. Eat a late breakfast and and do a Lunch Reservation to save the money. However, don't take the latest reservation so you can still get on line a little early.
Doing the CP means having to give up a block of time either eating a meal and getting on the Package Line or standing in the Standby Line. So as Master Yoda says, if you are going to eat a sit down meal you may as well do the Package. Sure beats standing for a few hours on the Standby Line.