Download-names are not necessarily the same as track names, for example:
If you have Monza, you should have different layouts of this track after installing (GP, club, 10k, ...).
Personally, I think it's not worth the work to try to download the specific tracks & cars needed this evening - it will probably not work. Just let the autoupdater finish his work and join afterwards without any problems...
Rookie-Club would be this evening: all Cobras and Daytona Coupes, OldringPark and Interlagos
By the way: Welcome on the Bude!