If I did it all over again, I'd get the base model Mazda3, then add all the goodies I want.
I don't really like ABS, and probably would turn it off if I had a choice, etc... Makes me feel like I suddenly lose control of the brakes.
The 17s are OK, but I'd rather get cheap steelies OEM, then keep those for winter or something and get a nice pair of light weight rims for summer with summer tires.
Air bags... Well It's very rare that it will ever be used and it's nice insurance... then again, even with extra air bags you can still die in a car crash if you have bad luck or do something stupid anyways.
Traction control is yet another way to put your car in the hands of electronics rather than feeling the RAW control of human operation... It may be nice for those that just want to mash inputs, but I prefer simplicity at its finest.
I say save the money for some worthwhile mods that add FUN, but that's just me. hehe