No, you almost certainly wouldn’t be able to increase the RAM, it’s soldered to the board. Doesn’t seem to mention IPS screen. It seems to have dual band WiFi n but not ac. Buy it, see how you get on, easy enough to take it back within the first 30 days. Just make sure the keyboard doesn’t miss key inputs and check if the screen is IPS. 4GB would be fine if you are just browsing.