My view is that Su-30 will prevail over all existing PAF fighters. My view is that LCA Tejas is a better fighter compared to JF-17, and barring the latest F16, all other PAF fighters are less than LCA Tejas.I didn't know you were a reckless gambler :
India should go with PAK-FA whose troubles you know very well and which you admit "can" be delayed, abandon Rafale and to make up for the shortages in the interim go with Tejas whose shortcomings forced IAF to continue with Mig21s and also with MKI the hangar queen a?
The Western front is protected by Su-30 and Mig-29 today. These fighters have been keeping the peace successfully.
I believe that the logic behind induction of PAK-FA/FGFA is sound. This plane should be inducted. It is an aircraft with long legs, about what you want, an aircraft that can stay in the air around 4 hours on CAP duty.
Mig-21 is completely obsolete today. Mig-27 and Jaguar will need escorts from Mig-29, LCA etc. for completing missions.
Rafale is definitely a good fighter, and will increase options for strategic strikes.