Your printers still under warranty send it back and get a replacement. If your going to get an Epson then use 'Jettec' refills, there are cheaper and just as good quality.
Just bought a Kodak Hero 5 all in one, based on cartridge replacement costs. So far so good.
Cannot help you on the WI Fi aspect other than I set up next doors Epson printer for Wi Fi, easy peasy took five minutes all done.