Hi,
I made the same recommendation a few weeks ago for the same situation, and only because I have a friend who is in the same situation and I have actually heard his speakers, but the NHT floorstanders, 2.9 and 3.3 I believe are recommended to be placed 4-10 inches from the wall. They have excellent depth at this distance as well. Bass goes to about 35hz for the 2.9, which is what he has, and the sound is a bit forward, but very warm and detailed. At 5K, I bet you could do better, not sure what the 3.3's run at.
I made the same recommendation a few weeks ago for the same situation, and only because I have a friend who is in the same situation and I have actually heard his speakers, but the NHT floorstanders, 2.9 and 3.3 I believe are recommended to be placed 4-10 inches from the wall. They have excellent depth at this distance as well. Bass goes to about 35hz for the 2.9, which is what he has, and the sound is a bit forward, but very warm and detailed. At 5K, I bet you could do better, not sure what the 3.3's run at.