Bit of a grey area I think in terms of uprated clutch and flywheel.
If your planning on booting it often (away from lights etc) then certainly get it swapped, the power and torque being rammed through will be exceeding its design limit load, Granted they have great tolerances, they will still be over run.
If your planning on the odd little blip, a quick push of the throttle whist on the move and not hammering the car off the lights or junction then it will probably be ok to keep the original clutch in. It wont last as long.
I would personally opt for the swap.
A friend had his 120hp astra diesel remapped to 170hp, EGR blanked (sport button activated) at 75000 miles, he only uses that power when on the move for a quick giggle, he had to swap the clutch at 111000miles and now again at 186000 miles......