Would Wash get any brownie points for being fully ready to accept any consequences of going behind his back but pressing that someone needs to be there to receive info from Nat. And look this way he's coming to you with a fully formed plan and probably with info already from Nat to help verify her rather than a I THINK WE CAN THRUST HER shrug!

And yeah Riverfall is likely where it'll be!! That's probably where they'll be meeting up regularly Coveniently too, a combination of that and dead drops?