Please report how it goes, I'd be interested to hear how it goes. I have opted for ethernet for now, partly because I was unsure of which antenna to buy (as they seem smaller than the common ones).
The ones linked by Jason look quite long but it's not specified how long they are. They need to be a certain length as they are routed around the inside wall of the chassis. But possibly they could be routed shortest path and just bent around the mainboard? I haven't looked at that, but maybe something to keep in mind.