I've done this, using both LEDE snapshot and WereCatf's build. Both releases are far superior to what Onion provides and especially WereCatf's is splendid as it includes everything. However, the main issue is WiFi driver. It is still unstable (disconnects every few minutes) and I have not seen it reaching speed beyond 6 MBit/s. I ended up adding an external usb WiFi adapter. If you decide to go ahead, let us know your experience