How about a WI-FI based solution?
It seem to me that physically connecting a keyboard to the kindle is going to be difficult.
So why not use a WI-FI based method? The Kindles own browser could be used as the visualisation window, so no software hacking required. All you would need would be a host computer, something like a Raspberry Pi, which would serve, possibly in as similar way to Kranu's emonitor.
https://www.mobileread.com/forums/sho...d.php?t=148581, but with text only, which would allow for faster refresh time.