About the highest levels in each PS, its' totally impossible for me to remember ! Alas... that was too far away from my memory but for the 1st one (the first I've ever tried !) I'm certain that it was not level 30 but that it was very long !
For the other ones I've absolutely no hints to how much time or what's the highest level I've ever reached !
About the level 99 glitch.. did some people have other informations ?