You can always pay the fare difference to get into the higher fare bucket, but confirm availability on EF before booking. YMMV.
Upfaring my deep discounted coach would be another $150. I did set an alert for C inventory opening up to use a BXP1, but EF now shows J4 F7, so unless some J's move up to F (currently no assigned seats), I'm pretty skeptical that I'll be moving up from 11C.