I work at a great dealer, in NJ Audio Doctor, and I would like to chime in . Your room is really too small to do justice to the Legacy Signatures, the Cailbres would be a much better choice. The Legacy speakers are a fantastic buy and offer incredible performance for the money, we are dealers for them.
I would encourage you to consider that a great pair of speakers will be with you for the next 20 years if you choose wisely.
The Zu speakers are way too colored and although are an interesting speaker I think you can do way better.
The new Paradigm Persona bookshelves are the best new speakers on the market below $20k! They use the most advanced drivers currently on the market: a pure Beryillium tweeter and a pure 7 inch Beryillium midrange/bass driver, no other company not even Magico, Wilson, YG or any of the major uber loudspeaker companies offer a speaker with this level of driver quality even in $20-4ok speakers, and the Persona B cost $7k not $20k!
The new Persona B are 92 db efficient and can be driven with a small amplifier.
The transparency of these compact speakers is breathtaking, and they are incredibly holographic, with very tight well defined bass out of an elegant compact enclosure, I would give these a listen.