Hands down stick with the PE seats.

Have you checked EF for C inventory? Depending on how you value it, it may be worth the 15,000 points + $75 to upgrade to J at least on the red eye leg. Of course, that adds up if you are doing it for multiple people in your party. I did this on a future solo PHL-LAX 787 booking in November. Base fare was $125 + $150 upgrade copay + 30K miles (RT), so it was a no brainer for full lie flat business class, including red eye return.