Very nice job with the car.
I like the driveshaft change - saves weight, and you get better response because that heavy OE driveshaft takes a lot of power to get twirling.
The differential cover is always a good move. Particularly if you are upgradin gears anyway, and its essential if you start to really ramp up the power.
Clutch and flywheel - again, lightening weight and in the driveline. I like your thinking. That clutch will handle lots of power. If it gives you problems, post them up.
I like my tri-ax, and I bet you like yours, too. The 08's have a much improved OE shifter (believe it or not) over the 05-07's, but even so, they are too rubbery. No missed gears with the tri-ax.
Never heard of S&B. Sounds like you are not totally satisfied either.
Meziere pump - an upgrade I plan to add to my 02 as soon as the old one give me any trouble. NOTE: At the track, you can use it to cool the motor between runs, if you got the switch/relay setup for that. Handy.
COP set is something I have heard good things about, though they really come into their own with a supercharged motor (help keep the spark alive).
I like Strut tower braces. I have the Steeda GTrac system on my 02.
Caster-camber plates should be OE. We need the camber adjustment in particular for road tracks. Just a little negative camber, and your handling gets a LOT better (though I would keep it close to zero for the street).
Not familiar with the BMR's. Hope your poly was well-lubed (otherwise, they will squeak).
Eibach sway bars are high quality. I also like Steeda and MM. You really don't need double adjustable shocks unless you get really serious about road racing. Then I'd recommend Bilsteins (expensive).
Underpulleys (have to go away if you add a supercharger, of course) work fine - and Steedas are tough.
Bigger rear rotors, fine, but they work a lot better with bigger front brakes (Steeda, SSB, Wilwood, Baer, they are all good). The 14" FRPP set is a good upgrade as well. Again, these are all you will need until you discover you need more at the track (and you'll know when that happens).
The LCA's are a necessity. The most glaring shortcoming of the S197's stock suspension, imo.
I'll have to see the 3M film kit to know whether or not I like it. Read about it. Interesting idea.
I like to see the brakes, so I probably wouldn't like the Kleen wheel discs, but that's a personal choice. If they help keep the wheels free of brake dust, that's an advantage.
You've done a very quick and very thorough upgrade on this car!
Much the way I do cars - brakes and suspension first, everything else follows. I applaud you avoiding the 20" wheels (they really hurt performance and handling). I believe the 18's are the correct choice, I use them on my 02.
Bravo!
stan