I would go with a non-PP car then. There's a noticeable difference in ride between the two and if you're just going to cruise, get the softer suspension.
I tried to do my buddy's Grand Am back in college. We spent about 3 hours before we said the hell with this. Never again.
I got the ST done at Professional Eclipse about four years ago. $209 for mid-grade tint and he lifetime warranties his work. He's also got a collection of cars you can check out while you're waiting. Haven't had any noticeable issues since I've had it done. It's so cheap compared to the time spend doing it yourself.
Probably stupid to bring this up and ask, but what do you think it would cost to have someone come in, remove the tile, replace the drywall (because I’m certain it will need to be at 30 years) and put in new tile plus supplies? $3000? $4000?
It looks horrendous and the picture with the rear hatch down looks atrocious. Couple people posted in the comments other wagons build using the Taurus/Sable hatch and they look much better.
I remember see that car at car shows and the Vintage Grand Prix when it was purple. Very cool to see it still rolling around, albeit in that horrendous new color.