After the metal gear solid bundel will i still beable to buy a 80 gb ps3??

May be...

because i dont have the money right now and i was planing on haveing the money by christmas and i want to play ps2 games on my ps3.

Yes @ September they're introducing a an 80 gig ps3 but with no sd slots no backwards compatibility and only 2 usb ports so its like a 40 gb ps3 with more space