Photography help needed now?

Ok so i have the nikon d3100 and the kit 18-55mm lens but i'm shooting a wedding in january i'm not calling my self a wedding photographer but i heard the minimal lens that you need is a

normal lens
zoom lens of some sort
and a 50mm

so i have the normal lens

will this lens work as the zoom http://www.henrys.com/24032-NIKON-DX-AF-S-55-200F4-5-6-G-ED.aspx

and i still need a 50mm for under 200$ or a 2 lens combo for under 500 bucks but please tell me the lenses off of www.henrys.com btw i'm 13 and i'm doing this for my cousin for free but also it is a good eqcuese to get some new stuff.

or should i forget the zoom lens because i have the kit lens and just buy a prime lens if so witch one is best out of these

http://www.henrys.com/139-NIKON-50MM-1-8-AF-D.aspx

http://www.henrys.com/65185-NIKON-AF-S-50MM-F1-8-G-LENS.aspx

http://www.henrys.com/24040-NIKON-DX-NIKKOR-AF-S-35MM-F1-8-LENS.aspx

btw i have the nikon d3100

What on earth does "eqcuese " mean?

I gave you a great answer but then I saw one of your answers you gave on how to take pictures when it is not allowed in a concert situation.
That is criminal and you need to learn that what you stated is setting you up to being a criminal.
You are stealing when you are informed in a concert no photography and you still do it.
In your case you are committing a first degree crime because you knew what you were doing, you planned it, you made a pair of pants to perform your theft.
You are a common thief with those thoughts and you need to bring your little 13 year old behind back in line.

You will live to regret trying to do something that you are not prepared to do.

You really need to tell your cousin you have no idea about what you are doing. If they insist you do it you should absolutely refuse to do it. Weddings are a big deal and these are pictures they are going to cherish for the rest of their lives and their children will cherish them you are way out of your league. Please don't do this to your cousin really explain you do not have the experience to pull this off.

If you have faces this type problem so you can search any solution on this company services. Ten you can search any online solution websites about photography.