India needs to ditch both Rafale and pak-fa. It will save you about $40 Billion. Rope in foreign partners to develop LCA and AMCA jointly. India has the smarts to make it happen while keeping the R&D for future use. This is a bold step for which the biggest resistance will come from IAF which frankly and seriously needs to ground those widow making Migs and put them out of service.
Reduced numbers of fighter squadrons is a reality IAF brass needs to make peace with, its a chronic problem which is here to stay for the next decade. Even if India signs Rafale deal in 015, those jets won't complete delivery till 2020-21.
The integration of the jet into operations is a whole different game. Unlike your 50cc scooter, a Rafale would have to be adopted, integrated, tested and tested again, pilots and ground staff would have to be re trained, new gear would come and ultimately new tactics would have to be developed to use the jet for the reason it was bought for.
For a Pro organization like IAF it may not be an unchartered territory but throw in the Tejas, FGFA, Mirage H, Fulcrum SMT, Sukhoi upgrade, C-130s, C-17s and possibly Chinooks and Apache's in the same regime and my opinion becomes visible.