Rooted! Once the port issues settled down it was a fun box! Thank you @jkr!
Foothold: read other comments posted here, enumerate and you are in
User: Ditto, read the manual, understand how things works and are set up this will point you to where you need to go
Root: GTFO Bins and just seeing what is right there is all you need.
General advice: keep it simple, enumerate, read, google, take stock of what you have (often right in front of you).