Morgan,
Great room and incredible view. I love the City and I still get down there to visit when I can. I think that the room will require some treatment if you expect to get the best out of your existing speakers or anything in Jim's line.
As for the HT2-TLs on Response Audio's site, I'm happy to say that they're now spoken for and Bill and Jim did a great job of letting me know what I am getting and what I'll be missing without the Raal tweeter. Frankly, given my roomsize and electronics, I am very happy with the LCY Pure ribbon and I believe I will have found audio nirvana.
So, I would just say, jump on it, the water is fine!!! Good luck in your continuing search for great sound. Dave