you have probably received all the help you need but i'll toss in a few cents...
your PL is your level and, in 2e, there is a book that provided a level progression. this next part is important; This game lacks requirements for BAB, toughness (your HP) and your saves. it is incredibly easy to make a character that can't handle anything the GM throws your way due to lacking those features. That is why the level progression in Mastermind's Manuel was, and is, so helpful; at PL10 your BAB, Defense, good save(s) and bad save(s) should be sitting around +10 / +10 / +7 / +3 respectively.
if you do decide to GM then keep that in mind. It is vary hard (impossible if the players don't notice) to GM a game with both a Superman and a vary mortal Batman in the same room. make a graph that shows each heroes name, BAB, Defense, fort, will, and reflex. try to keep the super villains near them (usually above by 2-4 points in they solo) so as to not unnecessarily overwhelm them.
things like this are often overlooked until it becomes a problem.