First thing you'll want to do is listen to Sub.
My option for what it's worth, don't do ceramics up front. I've been driving some form of a Northstar powered Cadillac as my daily driver for almost 20 years, with 16 of those years in an 02 Seville like yours. During this time I've also had some European cars. I'm sure this comment is going to not be taken well, but GM skimped on the brakes in the Seville. My DeVille, SRX, and Eldorado always seemed to stop better and never had pulsating problems.
My memory is fuzzy, but I think the DeVille and Eldorado had similar brakes to the Seville. The main difference for me was that insisted on ceramic with my Seville, I just hate brake dust. I let my OCD get the best of me one weekend and replaced all my calipers, pads, and master cylinder. Despite my best efforts, the car didn't stop like any of my European cars.
I think where I'm going with this is that they could have put larger discs up front and maybe designed the caliper with more than one piston. Because of this shortcoming, a semi-metallic pad should be used because it should have more bite than a ceramic.
My recent tests haven't exactly been scientific, but I replaced my VW pads with Akibono ceramics and the pads on my mother's Mercedes with ceramic. On both cars, they really need to be heated up to have any bite. They have been the best ceramics that I've tried, but still don't do as well as the OE pads on those cars which are both semi-metallic. I also tried to put some ceramic pads on my 6000 lb Audi and it was terrifying. I removed them the following weekend to be replaced with the cheaper OE pads.
A lot of the guys here will say they are happy with their ceramic pads and that's fine. I've just done some extensive comparison over the last year or so and thought that I would share.