Thanks Capt. Chris for resolving the question of availability of sawteeth on this knife.  
Duke, I think that we have 3 options remaining as, per Capt. Chris, thumb notches are standard on the knife in this configuration. 
The 2 options that we've already 'used' are: 1.) stag handle; and 2.) NS single hilt. 
Is a squared hilt an additional option (counting against the 5 limit) or is it a feature that doesn't count against the limit?  
If the squared hilt is a 'countable' option, I'd vote for these for our 3 remaining options:
-Squared Hilt
-NS Butt Cap
-Wrist Thong.   
If the squared hilt is not a 'countable' option, I'd vote for these for our 3 remaining options:
-NS Butt Cap
-Wrist Thong
-N/S Collar (to match the butt cap).
No finger-grips for me.
_________________________
Bob Carlin 
rfcarlin@hotmail.com
RKCC #622