Congrats on the new speakers

! I've had my SongTowers for about 3 years and I am still thrilled with them. What finish are you getting?
When I first got my STs, I powered them with an older Denon 1800 which was rated at 70 watts per channel. It was fine. At the time, my center and rear channel speakers were 8 ohms. Jim Salk and Dennis Murphy, the ST designer, say that any receiver or amp that can produce an honest 50 wpc at 8 ohms will easily drive these speakers. I'm not sure what your Denon 2310 produces, but I don't think you need to worry about powering your speakers. For all intents and purposes, you can consider the SongTower and the SongCenter both as 4 ohm speakers. But they are an easy load to drive for nearly all receivers.
I've heard STs driven by everything from a 35 wpc tube amp (AVA Ultravalve) to a 200 wpc solid state amp (B&K EX4420). They all worked well. They can handle high power, but they do not require it.