Thanks once again, Don.
No one has actually built the bike that I propose to build. So, no one really knows how it would work out in the real world.
So, for the time being, I'm going to plan on going with the BB cup, 13 tooth freewheel, and biggest chainring that will fit on the bike.
If it's a bust I'll have to think of something else but I might as well try what's easiest for starters.
On comment about chain line. The length of the chain from behind the wheel to the crank will mitigate the issue significantly.
More to come.
PS I'm thinking of installing the Currie kit on a Kona Smoke 29.