I'm buying an iPad 4th generation with 4G cellular connectivity. I want to print using my HP Deskjet 3050A or my Deskjet 812c which are connected directly via USB to my Windows XP PC. I do not have a Wi-Fi wireless network. I do not have a wired network. My iPad connects to the internet via 4G cellular, and my Windows PC connects to the internet via a Verizon cellular air card. Please advise. Thanks!