All I have is an iPhone, a PC without WiFi, and a Roku box (hooked up to a TV) that I am going to want to use on the road in my conversion trailer/RV. The PC will be about 10 feet away from the Roku/TV unit. Besides the Jetpack MiFi device, what else will I need to connect to the Jetpack and how do I do it? I am also wondering about any boosters I might need since I will be in a metal box and not real close to towers.