^^NOT chatter. Chatter is caused by clutch material, IIRC, and is typically only seen in much more aggressive clutches. The flywheel weight should have no affect in producing ACTUAL "clutch chatter." Chatter is produced when the clutch is grabbing and releasing, as opposed to a more friendly clutch which engages smoothly and gradually.
Sorry to get OT.
To the OP:
I'm in a similar position, except that I'm doing the install on my garage floor, with hand tools, so it's not as costly. Fun fun fun, though.
FSM says replace, NOT resurface, the flywheel, plus mine had about 4 hard spots that couldn't be machined out. Trust me, we tried.
I saved about 100 bucks by finding and OEM clutch online and getting the exedy streetlight as opposed to OEM flywheel. OEM clutch and fly from the stealership was close to $500, I ended up paying $373 online
Not bad for a new clutch and lightweight flywheel!!
Personally, I say OEM clutch or GTFO. My OEM exedy cost me $122+shipping from amazon.com. The cheapest I've seen most "Stage 1" clutches, even the Exedy Stage 1 (which just has more clamping pressure), were 350-400+ !! I'm not paying another $250 for nothing more than a stock clutch with a beefier PP. I don't plan on making insane power, prolly won't even see 260WTQ, so I won't need a badass clutch, plus the OEM one will be more friendly on the tranny
I'll be installing everything tomorrow night