[Tigers] Balancing and flywheel confusion

[wsamouce at kc.rr.com]

I check the archives and did not find a good answer (for me) on this.

My 1991 347 has been balanced to 28 oz with a flexplate.  The flexplate has a 1" X 2" weight welded to it with some of the material drilled out.  I have a 65 6 bolt aluminum bell housing that I will have modified for my toploader.

I have the following questions - 

1. Is a 157 tooth flywheel correct for this application?
2. I want use a centerforce flywheel, which would be best?
3. Does the engine need to be re-balanced with a flywheel vs. the flexplate?
4. Do I use a 10.5 or 11" clutch?

TIA!

Duke
B382002037