what clutch to get?

[Archangel]

You will need an aftermarket clutch to handle the extra power after you go turbo.
If you buy an aftermarket one now, you get the chance to get used to a much tighter clutch (its a big difference if you haven't driven something with a really stiff clutch before), but you will also put a year or two of wear on the clutch when you really don't need it.
I would probably go with the factory clutch, especially if you can get a good deal on it, until you get the turbo.  But, you will definately need to upgrade the clutch when you do, so it might be more economical to get it now.