What mods for full Jawa squad?

Don't use Potency not Tencticy if you are using them for new raid, the jawa buff is +50% potency for Jawas.

My Mods for them
Scavenger: Crit Chance
Jawa:
Datcha: Speed
Nebit: Health and Speed
JE: Don't do any Offense, Crit Chance, or Crit Damage, they are useless to him, do any other stat then those.

I've been rocking the 7*/81/g10 jawa team for a bit. I use them in Arena as well. I have mine modded for Arena, so take this with a grain of salt given that there is large potency boost for tank raid.

-Nebit (L): Tenacity/Health mods (take into account GG's DoT is bugged and isn't affected by tenacity)
-OJ (original jawa): crit damage + potency (He can pop 21k+ crits in Arena against viable opponents)
-Dathcha: Crit damage, make sure you've got a crit damage primary on triangle. (He has ridiculous crit chance from unique ability)
-JE: I've got him on Health mods, with strong speed secondaries. Primary potency in cross slot, primary speed in arrow slot. You really need this guy to be fast, but preferably a little bulkier. Mine runs 35k health+prot, 226 base speed (before additional 40 speed from unique ability), with 40% potency (gotta stick them TDs).
-JS: Up for debate. I really focused on potency to get the "line in the sand" TDs sticking, but if he is unstealthed and goes down early you are completely done for. I did crit chance x2, potency x4, with primary speed (arrow), crit dmg (triangle), potency (cross). Look for speed secondaries. I've got his potency at 75%.

Once again if you're only planning on using them in tank raid then nerf some of the potency mods for crit chance (since dathcha will be your lead, not nebs).