DE1 Cyclone v SOC GPIO and Ethernet

Hi, I'm new to the world of FPGAs and I am looking for some advice/help.

I require a project to read ADC values from the Terasic ADA_THDB GPIO version.

The SOC needs to wait for an Ethernet packet telling the process start.

The DAC generates a 200khz sinewave for 0.1ms, then samples the ADC at 75ksamples/s. It then needs to assemble 10000 samples of the data and send via Ethernet.

Do I use Linux on the SOC, and write all the code in C? Is that even possible.

Or am I better to use quartus to develop the system?

Thanks,

Brett