Hello Arnold,
As you mentioned you've been playing around with ARM based platforms (Raspberry Pi, Odroid, etc), check out the "Hal Digital" project:
https://sourceforge.net/projects/haldigital/
This older Rpi image (Raspbian Wheezy based for a Rpi2 ) has a graphical TUI to take users through configuring the Linux AX.25 stack and bring up the FBB BBS and the URO node. It has all of the foundation pieces for an AMPR setup as well. I've been meaning to work on a new Rasbian Jessie with an Rpi v3 image and merge it with my Rpi v2 hardening doc: http://www.trinityos.com/HAM/CentosDigitalModes/RPi/rpi2-setup.txt but a lack of time has been hurting that. You can try to take the HAL scripts and run them on a Jessie image though and I bet it will work for 90%+ of the items (the other 10% might be different due to SystemD specific settings.
Give it a try and if you don't like it.. just wipe out the microSD card and try something else.
--David KI6ZHD