Thanks for the heads up on the flywheel and bolts. How many miles on yours? I was looking at the 3 or 3+ but that seems like overkill. Now I need to decide between the 2 or 2+.
There are a few of us with various tunes who have all gone with the Spec 3+. I've had mine for close to 20,000 miles I'd guess at this point and I would have loved it from the start. No spacer, and yes... the pedal engages almost at the floor. As mentioned here, that was easier for me especially since this clutch takes a little more effort than stock.
I also have the Spec lightweight (only version they have) flywheel. You'll notice the engine will spool up quicker with this, and if you like to drive it hard... well, you'll like this over the stock flywheel. The *only* issue I've had with chatter is at 55-60 MPH in 5th gear. I just make sure I'm over 60 before shifting to 5th. You can hear and feel the "chatter", no doubt about it. I've had *zero* issues with chatter on my setup outside of this one spot. No problems pulling away from a stop sign, stop light, or drag light even.

As mentioned, replace the slave & throwout bearings. The flywheel bolts are one time use, and they are torque to yield bolts. Very important that you have the proper torque on these, and established correctly. Do not just stop at the correct torque, and don't "guesstimate" the angle you have turned after establishing the torque. This is not hard to do... there are tools for it, ask around at the shop on base, I'm sure you'll find one.
Have fun with the bolt behind the starter!

There's a few threads on here about replacing the clutch, read up on them... everyone has had some issue, so understand what those issues are and you'll be saving hours of time.