It's a large map so Jett+Sova may be an obligation, especially Jett that is the only agent that have almost no way to fall. (Playing Neon in a map you can fall feels too dangerous)
About smokes, probably Omen since he is busted, he may reach 80% pickrate overall if it's an omen map, Harbor and Astra are also good contenders.
About senitnel Cypher may be good to control mid and lurk, but it can be a no sentinel map, and may be replaced by a 2nd duelist (Iso ?)
5th role is what I call "Scrambler", usually it's Viper (sometime another doble controller) Kayo or Breach, you will need another controller to luirk, control mid and efficient lurk, so i'll go Viper.
So yeah, Jett-Viper-Sova-Cypher-Omen