1.) Newegg says accessories are not included, but pictured. What does this mean? Is the remote an accessory? The cables? It says you'll only get the "OEM Barebone?"
that's just saying IF it's an OEM barebones one. Yours is retail
2.) Will I be able to hook up my headphones?
yes
3.) It has the ports for Wii or Gamecube?
yes
4.) Max monitor size and resolution?
it says it in the description