Hello Larry,
You have some nice gear there. There's a Thor pre-amp and some Magnan cabling in my system as well...
Okay, I have two suggestions - one simple; and one complex and somewhat self-serving (hey, I'm a dealer - that's what the fin on my back is all about!).
The simple one: Do as Kr4 suggests and pick up a pair of the bass modules.
The complex one: Get a pair of Sound Lab Millennium-2 full-range electrostatic loudspeakers, which are superb on the music you describe (especially female vocals). Now your BAT won't drive 'em, so I'd take your BAT in trade towards a pair of monoblocks that will. I think we could stay within your budget, though we'd be at its upper limit. By the way, the pair of monoblocks I have in mind were recommended to me by Paul Marks of Thor (I'm no longer a Thor dealer, but have only the highest respect for Paul and his products).
Best of luck in your quest!
Duke