clutch adjustment question

Hey Bill,
That freeplay adjustment is going to change the first day you drive it anyway due to the disk and flywheel settling in to each other.
So that means that the freeplay will get less quick at first.

If it were mine I would probably fix that "not going to the floor" thing by changing the ratio on the Z bar (But not before I ran it to make sure everything worked like it should.)
It would just bug me that it didn't go all the way down.

The fork return spring does hook into the fork like you suspect, but I'm not sure about the bell housing end you mentioned, as a lot of the setups I have seen have a small bracket off of one of the lower bell housing bolts.
It doesn't really matter where the spring attaches (unless you require factory stock style)
If you can, the best thing to do would be to run it for a bit so the clutch wears in (even just a little backing up and going forward in the driveway) and then take the final adjustments, freeplay and pedal travel on.
Even then, it will probably need another small freeplay adjustment within the next few days of driving.

One BIG no no is to let the freeplay go away completely (very important to always have some) or it will cause the clutch to slip and burn.

Just my own experience in doing sticks.

Hope it helps