hm, tricky. For sure he´s 9% squeezing, but this squeeze is vs utg, mp and co so i think his squeeze is very strong. So i don´t like 4betting at all and the question is are we calling or folding. With your read that mp and co are not slowplaying aces i would prefer calling but i think folding is also reasonable and it depends on your table image (rfi utg and so on).

You should just fold this directly. Its a bad hand playing 4 way pots with. We will have the worst EQ of all since the squeezer, altough at 9% overall will have max 5%range here and lots of AA/KK. If we get it heads up vs squeezer we have low EQ too.