Just an update... I ended up buying an Engenius AC1750 router for $119 from Microcenter. Has internal antennas. The range is better than the N300 and faster too. Signal a little weak at the far end of the house, 3-4 bars but at least a got a signal! Anyway I made the Netgear N300 a wired access point, strung some cat5 wire upstairs to the far room and made the N300 a different network SSID. Now I can get WiFi to the end of my property. Be real handy in the summer as I like to sit outside under the tree in the evening. Neighbor two doors down informed that he was getting my network SSID! The problem has always been I have a metal roof and that bounces signal.
The thing I like about it is you can have up to 4 different SSID's and a guest SSID on each band. That is like having 5 different networks per band. So I can have different networks for things like cell phones, kindles, etc and still keep the main one for the PC.
Can't beat the price. If you don't need to broadcast thru a bunch of walls or metal, it is well worth the money.