Once WS engine becomes operational, only then.
All with strings attached, spares, parts, tracking, weapons integration, our every move will be countered, again think beyond 10 years.
Exactly my point, at-least come at par, if not better.
Think 10-20 years ahead.
With J-10 and J-11, there is no limit to upgrades or modifications.
JF-17's will perform the defence strategic roles perfectly for a good 15 years, we'll rid ourselves of Western domination.