that 2029 can be shortnened to 2027 with 32jets/year(4 assembly lines) if 97 more are ordered, economics of scale kinda thing.look tejas mark 1a 83 aircraft is going to deliver near 2030 (coz its 1-2 year late from its delivery timeline of 2029). so if we make deal of additional 97 tejas mark 1a, they will going to start delivering only after 2030-31.
anything below 28-29 sqauds is red alert. open invitation to things like pathankot.
2 sqads of 5th gen? we don't have that kind of money, should never happen, will cost you more than arm and a leg + compromises everything from strats to maps to comms to fututre jets(cannot trust anyone other than India)