First of all, stop buying ****ty rebuilt alternators from Pep Boys. Get yourself a good new alternator or a used Saturn alt from Joey.
Timing chain is a pretty involved process, set aside the better part of a day, or as was previously mentioned, 2 days if possible. This is something you don't want to screw up, as I believe Saturn motors are interference engines (I could be wrong on that though).
Oh yeah, Saturn serp belts aren't that hard. Try doing one on a mid-90's Pontiac Grand Am with a 3.1 and motor mount on the side