[...]
I suppose it depends on where you live, but in an area where power supply is stable, I think keeping everything in memory and writing it in one go would be best. [...]
Yes. I used
/dev/shm and a symlink, until the blockchain download finished.
(Sounds like wx was broken. I haven't messed with it yet, sorry. Does it have a helloworld you can build?)
I don't like running black boxes, but I don't have time now to read the source so I see little benefit in compiling. (I have read "Reflections on trusting trust".) I have a DMZ and that's good enough for now.
HTH,