[Punisher454]

Its a really large change in elevation. The solution is already hinted at by the original film set. Behind each viper is an elevator, you can see the rollup doors behind each viper.
My version of the layout has the elevator shaft going down to the landing deck, and also up to the hanger level. The elevator has three stops, landing bay, launching bay and hanger deck.

And the studio set didnt have the launching bays "head on" they are all inclined towards the bow. The blueprints show this as does my launching bay model, which I'll do some CRUDE renderings of very soon.