Today, degrees hold a lot less worth than even 10 years ago. I'd go through your fATPL, and then gain exemptions from a Degree based upon your theory exams. It is possible I believe. I heard of one guy with a fATPL that entered directly into the final year of an Avionics Degree.
Whilst your RHS on the 737 you won't be thinking about getting a degree I assure you.
Anyway get to fly long haul and study for a distance learning degree in the cruise