Having our annual draft party at my house this year. 11 are showing up with their laptops, the other 3 are all around the country and can't make it. My concern is that I have centurylink wireless and I'm not sure it will be enough to have 11 laptops logged on at the same time. I have a ZyXel PK5001z modem. Any good ways/tricks to make my signal stronger? Or do I just need to buy a booster?