Ok firstly the 5ghz is a bandwidth, it's nothing to do with speed. If your able to hook this tower up via Ethernet and or wifi. You should get access to both the 2.4ghz and 5ghz. The wifi pic card installed along with the wifi antenna should be good enough for most anything. I have played games with a good frame rate and no lag both wifi bandwidths and connected via Ethernet port. I would suggest no less than 30 mbps high-speed cable though or more depending on how many will be sharing and device wise on your internet. 60 is fine if you have 10 devices and possible up to 15 devices connected over a day, not suggesting running all at once bit simply implying it should be able to handle things.

i would have to say no it does not, the reason being that things like GPS require maybe alot of wifi coverage, and or access to a LTE or a mobile service to get exact location. so the samsung C+ does not run anything but wifi, so it may have some capable features to run maps and other GPS programs but once your off a wifi or out of distance you may not have the ability to access the GPS features. i dont believe any of the chromebooks have a full GPS package, tablets are better able to handle if you get one that conects with a lte or simcard services