look,I know you're freaking out by just listening the idea,but is that too hard to afford some 4th gen jets like F-15??look at Sudan,they're one of the failed states as well as they've Civil war for decades.yet they afford to keep some good number 4th of jets(they operate Mig-29 2 SQD,Su-24,Su-25,1 sqd each and other 3rd gen jets as well).
and are you kidding about the cost of F-15??they costs around $30 mil,comparable with Mig-29 while Su-30 is far far more expensive.and F-15 is a deep penetration fighter Jet??LOL..some version of it,like E and SE are customized strike jet,but actually its an Air Superiority jet.
and its not F-15E which is most costly(as it costs around $30-35Mil),its F-15SE,which is launched recently which has some stealth features and costs around $100 mil.
seriously,you should read about platforms before making comments here..that should be the first step.