Hi, I assume you're a Welsh Student (due to WBQ). I'm a Welsh Student too (technically).
I recommend you go back and resit one of the modules than taking / fast-tracking WBQ. Sadly, this year is the last year for the old curriculum (which had a Pass = A / Fail = U). Next year it would be graded (A*, A, B, C, etc.), and apparently, you won't be able to fast-track it anymore.
I do strongly suggest you just go back and resit / redo one of your modules / subject.
Hope this helps.
P.S. What college are you in, by the way?