I would recommend a 20 oz co2 tank, 200 round hopper, face mask, athletic cup. As far as a gun goes I wouldnt recommend this gun. A friend of mine has one and he keeps breaking parts on it. Also it is electronic and I wouldnt recommend that for a first gun simply because you may become dependant on the semi auto and whatnot. I would recommend a spyder victor II for a starter gun. I have seen them for 50-80$. This gun with an aftermarket barrel is a very good gun to start with. A tippmann 98 custom is also a very good first gun. It is definately a step up from the victor II. Its very easy to use and maintain. You might want to read these posts:
Are you new and looking for a gun? look no farther
Master "What gun to choose" Thread