The JF-17 Block III will likely have AESA
One alternative may be to develop a new JF-17 variant that does have enough range, payload and speed to effectively replace the Mirages.
What I know is that the Block II have the AESA, and after 150 jets the 50 Block I will be upgraded to Block II. Block III will remain on the drawing board until the first 150 jets. The new platform to replace the Mirages will be a long haul twin jet.