likely this will not work because likely the instruction set differs.
The rpi is arm and the software is likely x86, and "Wine Is Not an Emulator".
If you can find one that uses a java client it's more likely to work.
yes you could use static-maps from Java or any language, that's what it's for.
If you know you want to use Java then using static-maps is as trivial as downloading a file.
There is no such thing as a "hidden partition" because all space is accounted for (have a look see in GParted) so just use a normal ext4, and use LUKS if you want some security.
to mount your non-indexed partition use;
What you want first is a quality UPS and/or a reliable reboot on power loss as you don't want your pipes bursting if the power goes flaky in sub zero weather. Other than that you will want to scrap your potentiometer in favor of a Rotary encoder or up/down buttons. (as a less intuitive design you co...
The nuc is the only SBC like thing that can do 4k/x265 AFAIK. The Amazon Fire TV ($75) with kodi side loaded on it is a more closed option (That can be rooted but can't run custom OSs at the moment.) There are a bunch of GPUs that do this but not many are used in SOCs yet. Amlogic (S905,T886,S812,S8...