There are a few ways to work this one. On a limited number of days you can same day no overnight and get back. That may be worth the higher price and lower yield. Or, if you want to overnight in Long Beach, the rewards are much better and sub 5CPM as you can see:
4880-5518MQMs a 5.3CPM to 4.7CPM (with overnight)
Bookable on Delta.com
DM yields 10,980 to 12,415 (with overnight) Skymiles per CWSI.net!