I have a Cherokee...and a GP.If I were you I would keep the Cherokee, because you get peanuts if you try to sell it, and if youre looking for a 04+ style GTP, get the 05+, because they have aluminum Lower Intake gaskets versus the plastic ones.
As for the 97-03 style, the Coupe is obviously more attractive looking than the sedan, any 97-03 look better than any 04+, and the 97's should be avoided because of a vacuum trans and other quirky 97 only things... There is no such thing as a 2 door 2003, but the 2003 and newer GP's have a hardened 4th shaft in the trans, as the 98-02 GP's sometimes lose 4th gear.
Good Luck