MX5 clutch +/- flywheel replacement?

[vexed]

Evening all

I am a three months into MX5 ownership and have completely fallen in love with the car. I bought it as a cheapish convertible to play with the roof down for the summer months, but I am very much sure I will be keeping an MX5 long term. My car is a Mk2 1.8 on 80,000 miles


I was doing an exuberant start today- Revs at 6000 and dropped the clutch, but instead of complaints from the tyres, the speed picked up steadily whilst the revs stayed high. I presume this is an early sign my clutch is on the way out.


I was wondering if anyone would be able to advise how much I should expect to pay for a clutch change from an independent?
Is there any advantage in going for an non-standard clutch? (Otherwise standard car, no plans for power mods)
I quite like the idea of a lightened flywheel, presumably this makes the car a littlle 'revvier' and potentially accelerate a bit quicker. Would this add much expense, and is now the time to do it?

Thanks in advance!
George