Very nice, clean build. Build the bike YOU want, because you will be riding it. I do agree in principle with having a front brake if for no reason other than extra stopping power. Shimano makes awesome coaster brake hubs but rear stopping only is just not the best in panic situations. Having said that, there are millions and millions of bikes that had only a rear brake, so it can't be too bad, right?

I think you made your point on the fenders!