Re: So i am thinking about building one.
I have one with, and one without a coaster. I've never had any problems using the coaster, but my newest bike has a disk up front, and a v brake in the rear.
I'm a very experienced rider, think old geezer. I could probably ride with no brakes, and be alright, but between my 2 bikes, the one with the best brakes is more fun to ride.