Wow! If you do chip the car, be certain to get an ECU flash that allows you to set and code-lock a "valet" mode, which severely limits turbo boost and essentially renders the car a gutless wonder until you unlock the "performance" mode...
OK, on to clutches. The OEM clutch/flywheel comes with a dual-mass flywheel, which is supposed to (1) provide the mass/momentum at the end of engine output shaft that is necessary to keep the engine spinning smoothly and dampen vibrations when the clutch is depressed and (2) keep the flywheel's mass near the center of flywheel rotation, reducing the amount of power required to increase the speed of rotation. Essentially, a dual-mass flywheel is an attempt to balance conflicting forces. The end-result is smooth operation. A kit for the 5-speed manual with the OEM dual-mass flywheel and matching clutch is available for about $500
Almost all of the upgraded/higher-performance clutches convert your drive-train to employ "lightweight" single-mass flywheels, usually made of steel or aluminum. The aluminum single-mass flywheels are usually designed to give better engine RPM spool-up times and reduce rotational mass in order to unleash some extra horsepower. The "lightweight" steel flywheels are designed to achieve similar results, but the steel flywheels usually weight about twice as much as their aluminum counterparts, so rotational mass is higher with the steel flywheel. Bottom-line: the aluminum flywheels allow quicker RPM spool-up but can be perceived as a bit twitchy, while the steel flywheels can handle high power levels and deliver a smoother perceived engine response.
The first performance step up from stock/OEM performance is often referred to as a "Stage 1" clutch/flywheel kit, designed to handle power output of around 225-275bhp. Stage 1 clutch/flywheel kits range from around $350 up to around $1000. Clutch pedal effort rises somewhat with a Stage 1 clutch/flywheel kit.
The second performance step up from stock/OEM performance is referred to as a "Stage 2" clutch/flywheel kit, designed to handle power output greater than 300bhp. Stage 2 clutch/flywheel kits range from around $700 up to around $1200. Clutch pedal effort rises abruptly with a Stage 2 clutch/flywheel kit.
The third performance step up from stock/OEM performance is referred to as a "Stage 3" clutch/flywheel kit, designed to handle any amount of power that your engine can possibly deliver; we're talking stupidly over-boosted, fire-breathing, self-imolating 1.8L turbo-engines. A hydraulic ram may be necessary to depress the clutch pedal...
So troll the forum sponsors for clutch/flywheel kits at the various performance stage ratings. Given your modest performance requirements (and keeping in mind that we're talking about your wife's daily driver), it's likely that a Stage 1 clutch/flywheel kit will handle any engine-chipping that might be applied and yet keep the clutch effort to a minimum.
Good luck!
