I have a linksys S4 router/switch/AP version 2. My laptop is a Dell Inspiron with an installed 1150 mini-pci card, supposedly this laptop has a built in antenna throught the casing of the laptop i guess. Would a linksys wireless laptop pc card give me more range or the USB adapter then what i have. Or should i upgrade to the 5 Ghz AP along with a 5 Ghz laptop PC card. Or how about going either way with a better AP antenna? Cost isn't really a big problem but it must be through dell.com since i have a large sum of credit with them.