CTGP PC (but good)

CTGP DX is the same concept. Unless Chloe changes that, it'll be much easier to get a track into it than But Good. The quality will be a little higher than yours too. Obviously yours wouldn't be worthless. But you might not find ppl giving you courses in the future if CTGP DX does come back.

The pipeline, as I see it, is:

Try for CTGP BG-->Get Accepted/Rejected-->Try for CTGP DX-->Get Accepted/Rejected-->Try for MTGP-->Get Accepted/Rejected
CTGP DX also has more overall better creators with courses in it. (Max, Nudge, Choco, Nodac, SM7, Chloe, BowserJr03, etc.(Notice how Lely isn't in CTGP, this is because he is a fraud who makes fraudulent tracks)

Add the fact that you can only have 1 track per cup in CTGP But Good, and even though it isn't hard confirmed, probably not allowed to be in back to back cups...(same applies to CTGP DX, which is good for you I guess), and any creator with more than three tracks ready will have a bunch left over for CTGP DX.