J-XX as its a 5 gen AC...I doubt we will get F-35...and even if we get it there is possibily of sanctions......bu honestly until 2025 J-10,JF-17 and F-16 can do the job.....as the other side(IAF) will still be flying Mig-21(few upgraded) ,Mig-27,Mig29,Mirage-2000 and Flankers and am quite sure...