Hello, Atmel or IMX6 not suitable for this. 1 Gb ethernet, which is in fact running at a speed of 480Mbit/s, 1 PCIe - nowhere to hang the second Gbit ethernet, wifi and 2 USB3. If you hang up after PCIe Switch - will be cut a speed, multiple of the load on the channels. + Architecture does not allow pump 1 Gbit, and even hang another PCIe resources - to get the pedal horse. CoreIQ most be suitable, if it does not required a super graphics. If you have interest we can discus in char or skype: b_andrey.
Regards,
Andrew