Legacy doesn’t apply for post grad only undergrad. So you are only a Legacy for Yale. Since this is the case I would SCEA to Yale,and ED2 to Emory or Vandy.
Stanford-High Reach
Yale-High Reach (Reach for SCEA)
Princeton- Reach
Emory- Reach (High Match for ED2)
Vanderbilt- Reach (High Match/Low Reach for ED2)
Rice- Reach
WUSTL- Reach
I’m not comfortable saying any of these elite institutions are matches for you unless you apply ED to Emory or Vandy. There admit rates are all low. Your EC’s are not focused, you seem uninspired. Your best bet is probably Vandy or WUSTL as they like High stat students like yourself.