I was definitely thinking a pair of
Tekton Mini Lore for speakers.
No doubt the NAD will sound much better than the Onkyo, and the Onkyo does not have bass management, only a subwoofer pre out. You could step up to the NAD C326 to get a sub pre out, or choose a sub with high level input for the NAD C316. The Mini Lore may just satisfy you for bass, or just add a subwoofer later.
The Onkyo has digital inputs because of its internal DAC, so using the NAD, you will need a DAC for the digital inputs. Newer TV's generally use an optical digital, but need more info for iPod, model, docking station (have one or want one)?
I did check your turntable, and it has a built in phono stage, so it will work with any input on the NAD.