The M+ dungeons are pretty minor such it's such a small amount of AP per. You wont really see anything until you get the 1200+ from the cache.
idk how much it is for 37 -> 38 currently. But for mine it's around 60k per level which I can pretty much do in a week when I cbf.
So if you're overly concerned about it you can very easily push for those particular traits without a huge amount of effort and easily pick up 2 levels a week initially. But you'll hit those traits much much faster.
- Do your cache which you're already doing. (make sure you have a contract on for a faction while WQing for rep)
- Do all the large AP WQs in the world, pretty much anything on the opposite continent.
- Also favor AP WQs for Trotollian / CoA as they also give large rep gains and CoA gives more AP than the quest reads.
- Do 3 Mythic Islands (Not grind them, just for the 2.5k reward and the treasure map which can have another 2.5k Ap)
- A Mythic 10+ Dungeon (which you're already doing)
The sweep doesn't actually take very long at all, but when the levels feel more meaningful it can feel more worth. Most of those things you're already doing but it kicks it into gear a but more. Doing that some days depending on my current rep / what WQs are up can net over 10k ap a day.
With the Islands day potentially being a 15k+ day.
No islands grinding but a little bit more WQs which I personally find much less tedious.
End of the day though up to you.