Basel would be the best draw out of pot 1, but Sporting are a decent shout too, think we'd have a sporting chance.
Copenhagen, Gent or Ludogorets from pot 2
Rosenberg or Malmo from pot 3, or really anyone but Wolves.
Lived in Warsaw for 2 and a half years. Went to see Legia once (2017) and they were rotten.
Nice place to eat and drink is Podwale 25 (pod-valley). Or if you're on the lash try Maziowiecka.
And reading the write up your think they were playing Ajax - "this was supposed to be a really tough tie but I thought celtic bossed the game" and all that stuff.