I have much of the same equipment. I would say a phone call to Sumiko would be a good idea. My system sounded way to layed back for my taste and was told to try some solid core copper cable. I was able to pick up some Audioquest cv-4,very cheep($5 per FT.). The results were incredible. I do not think the B&K amp. would be a good idea. You may want to look around for a Plinius amp. I also think the Haydn is to small for HT,use your Bach's.
With the Vienna Acoutics speaker cable is very important.
Tim Flemke