Most people on this forum are going to tell you not to do it. A very high percentage have thousands of dollars of gear, no formal training, but are expert wedding photographers...
Now back to reality. You have what you have for gear, time is on your side, and most people will be looking at your photos loving the memories you caught. Get some decently exposed photos that are in focus, and you are good. You have 3 or 4 months to learn your camera, and knock out 15 to 25 shots at home, that you can carry over into the wedding.
Every wedding I've been to...the first thing they say is no flash photography. If that is the case, and the ceremony is indoors, then your kit lens and zoom can be used for before and after shots outdoors. Use the 50 inside if they say no flash, as it is your only hope of seeing in the dark.
Use the flash and your kit lens at the reception. Even if you have someone hold the flash for you while it fires, you can get some nice memories. I'm not sure if your camera can trigger a flash off camera, so you need to look into that. If not, use it on camera and point it at a wall or ceiling or even look into DIY diffusion. There are even inexpensive little diffusion products you can buy for the flash.
I would make sure to have 2 or 3 cards. Take a few images, throw another one in and keep rotating, incase of failure. Other than that, practice non stop until May inside your house and out simulating shots that you will find in wedding forums and books.
I've taken photos with similar gear that you have, and brought them to acceptable levels in lightroom and everybody was happy. They aren't going to impress a photographer, but they told the story, and are great memories.