I would only ever do any Valenciennea species in a 4’ tank or bigger with Atleast 3-5 inches of sandbed that’s 2-5+ years old. My reason for this is easy, they’re active and can rid sandbeds of life quite fast.
As for the Jawfish, Look into the Pearly Jawfish and Blue Bar Jawfish. Both are similar but personally I prefer the Blue Bar. These are also a warmer water species and so will more than likely manage to live their whole life in a reef.
As for YWG, these don’t NEED pistol shrimp however it’s recommended as they will build burrows with the pistol shrimp to home both of them. Also look into Stonogobiops and Amblyeleotris as these are similar but much less aggressive. In terms of gobies, I have a whole article about them if you’re ever interested in them (I've studied gobies for a good 5/6 years now so have figured out their slightly more advanced care or preferences).