Power Amp for Dynaudio Contour 30 and 25C Center

Hi fellow audio fans, 

I currently have the following equipment:
Arcam AVR 850 which delivers 180W / channel at 4ohms
Front Left/Right: Dynaudio Contour 30 (300W 4ohm)
Center: Dynaudio Contour 25C (300W 4ohm)
Surrounds are Polk and an Infinity Sub. 

I understand that Dynaudios are power hungry speakers and really start to sing with high power so I'm wondering if my Arcam is enough to drive the Dynaudio Contours. 

I am looking to maybe upgrade to a Parasound A31 amp, maybe a Bryston. Looking in a 3500 range for the 3 channel. 

What do you guys think ? Will it improve the sound of my 3 channels ? 

I also want to add 4 SVS Prime Elevation speakers for my Atmos speakers as I am currently running a 5.1 and will be going 5.1.4 way. So I'm thinking of adding a 3 channel amp as mentioned above and adding another 2 channel amp for the 2 atmos speakers, was looking at a Parasound NewClassic 2250 v.2. 

I know people report that Gryphon, Pass Labs and Simaudio pair really well with Dynaudio but those are just very expensive for me at this time. 

Thanks for all the help!