Yor problems are solved .
This place is, I believe, one of the major importer of Bessa cameras in the US and Voigtlander lenses,of superb quality and designed for those cameras. In the case of the Bessa R you don't need any adapter and there is not worries about any of those lenses damaging the shutter curtain.
Here're some links of the same place:
Bessa R: http://www.cameraquest.com/voigrf.htm
Lenses: http://www.cameraquest.com/voigtlen.htm
Prices: http://www.cameraquest.com/inventor.htm