Re ski jump -
No matter how big a wing or how big an engine or whatever gear stressing cases there are, the ski jump will always add some benefit when compared to the flat deck case. This is because in all circumstance a ski jump increases safety, increases performance, increases ability to handle ship pitch motion and reduces pilot handling workload. However to use a ski jump you do need the aircraft to be fitted with an attitude control system that is effective at speeds below normal wing stall speeds.