Dude, buy one copy of any IL-2 and you are covered for life. Unlike some stuff from you-know-who.
Easy MP, easy setup, zillion of servers, players, mods, skins that can be seen by other players, etc... And, for your pleasure only, drilling sound of props, no HUD, and I even heard a rumor that some lot of stock aircraft are related to WW2 and, strangely, on many maps from that period. Dunno.
Later on, in case you miss doghfighting with fighter planes, after playing some tractors with AFM from you-know-who, install Korea mod.
Case closed. Open preflight checklist: Prop off. Jet on.