Okay, now that I have persuaded the OP to defect to the Denon X4000

, we can talk about the speakers and subs.
I am certain we all have our opinions, but IMO, the most important next step is the subs. I would grab dual Rythmik LV12 for $1060 delivered.
Okay, so now you have about $1K for 5 speakers.
Ascend 340/170 5.0 package w/ matching stands would be a good choice - you could place the order along with the Rythmik.
Another option would be to get five NHT Absolute Zero speakers (on sale for $178 each shipped). NHT offers 30-day risk free returns. The Absolute Zero has a superlative listening window frequency response of +/-0.9dB from 100Hz-10kHz. The LV12 is flat from 19Hz-300Hz +/-2dB (AVR LFE output to Sub LFE input). So just set the XO on the Denon X4000 to 100Hz. Sweetness.