Well I built a So Colonial .54 with 44" barrel and English round-faced lock (I have the Caywood Wilson on a smoothbore -Great Lock) using the Don Bruton pattern. I think it is one of the best balanced long guns you can carry. Weighs in at just over 7 lbs.
This .54 is my deer hunting buddy!! It is my Daniel Boone Gun. Hand forged iron mounted and something I could argue he might have carried prior to and during the Revolution.
I am sure yours will be prettier than mine since Don is building it. He is a master of interpretation.