I used Odroid Ubuntu Bionic on the N2 for a while. It had stubborn issues with DNS service (it hung regularly). Then I switched to Stretch and that has been working fine. As said, the building on stretch arm64 was straightforward.
With Stretch, I did have to correct the log-rotation setting (in case you have a desire to look at logs); posted here.
UAT on Pi running only dump978-fa. Works like a charm.
I had big, big plans to have UAT and 1090 on the N2. Alas, dump978 takes up too much attention from the CPU to usefully combine with 1090 in my case. YMMV. 