You guys need a JV or TOT or something to build these in house. The IAF has a huge numerical superiority and this is a much easier response to manage that. You guys need to develop two integrated rings. One ideally mobile but medium range (for around the border to go hit inside the other territory by 30 miles or so. The other one long range and high altitude in a second ring placed well behind the border that can still hit out to the border and can also take care of high altitude bogies.
Then comes your current point defense Cortale, Man Pad systems for short range point defense interceptions, which won't be a whole lot useful if the enemy manage to cross the PAF and the two integrated SAM rings