CAT MOB on GHM9 Rookie Mistake

Alright good people of the internets I made a rookie mistake and need some advice.

The short version is this: I bought a used GHM9 Gen 2 and a CAT MOB Ti with Spooky QD. My screw up was not realizing that the tri-lug adapter on the GHM9 is actually part of the barrel and cannot be removed.
Doing some research I think I have a few options. Hoping someone might validate or give me some other ideas.

  1. Spooky onto threaded end, MOB on that and send it.

  2. Munkworks TSF to HUB adapter and then a trilug adapter into that onto the barrel (munkworks on backorder and not sure if thats a good idea with this suppressor)

  3. New barrel without a built in tri-lug but really I think this is essentially the same as option 1 just more expensive.

Feel free to belittle me but if you do have advice or other options I would greatly appreciate hearing them!