It should not be an issue.
https://2d73e25b29782b6d6766-9c8af5cbfef16739445bc76457060528.ssl.cf2.rackcdn.com/Spec_600901_Cornwall_635120773557920000.pdf
This may be the way to go. The new Hersey are superior to the older models. Things change in life including our tastes. They will also be easier to accommodate should you find yourself downsizing in the future. I'd give them another listen.
I just picked up an Apple TV 4 to replace the my (very) old and non-supported version. It works very well streaming and feeding my Marantz. We are talking about getting a larger, probably 65" TV this year as well.
I find it very good. There is a down-firing port on the bottom channeling the excess bass energy from the Walsh driver downwards through the essentially hollow speaker cabinet which works extremely well. I cross them over at 60 for TV and movies, turn the sub off and put them on full range for two channel music. They dig down to 32 on their own. More than enough bass for this room. I purchased these to replace my original RB 61 IIs that had been my front L & R and mains for music. There was nothing at all wrong with them. The change came about do the layout of our living and dining room. The Ohms are hard to beat when listening off axis.
I should think it will be around for a while anyways. A lot of work is probably being done on the big picture items. I don't think they will be getting down into the weeds for small stuff right away. As it is just a part of the larger website I wouldn't think that there is much cost to having this up. My two cents worth anyway.
Yes, they dig down to 45. I found setting them at 60 in my space worked very well seamlessly handing off to the sub. A bit of noodling around and they sounded together like floor standers for music. My rears are set at 80.
I would say that is cutting her close, probably the largest speaker you'd want in that space. I'm glad you mentioned the cubic feet. I have a pair of Ohm Acoustics 2000s, cubic feet is exactly what they use as model recommendations for rooms.