Time to develop simple application ?

Hello, I want to use NS7520 processor in my application, but I am very timeless. Could someone tell me the time I need to develop a simple application : - Ethernet interface - 1GB SDRAM (DIMM) - 16 bits width parallel interface This application is to store a flood of data (from parallel port) on SDRAM. Thank you.

You can reference the Netsilicon Dev. kit to achieve that.