May I ask what you used for your keyboard setup?

Sure, I went with several designs because I was traveling for hundreds and hundreds of days. I'm accustomed to Lenovo/Thinkpad laptop keyboards, which are what many traveling reporters and writers prefer.

Nothing was great or bad, it depended on what size I wanted to play with. For $30 and Bluetooth, this is worth a look: https://www.amazon.com/1byone-Foldable-Bluetooth-Keyboard-Smartphone/dp/B00VRCKK1Y - I went through several different Logitech designs, etc. Odd issues can come up such as idle disconnect, but Android 5 and newer Bluetooth stack is different, so it can be device dependent.

I have an older Microsoft bluetooth travel keyboard that's light but is relatively large, but I can cram it in bags without too much trouble. It's a matter of how much typing you are doing (sometimes I do hundreds of pages of writing a week). When it comes to code, control keys are more significant, even basic things like copy/paste...

Note that a lot of Android apps have some troubles with certain keys on Bluetooth, cursor keys and such. Helps if you can modify the app you need to make it work. Although you are mostly talking classic Linux shell, so most of those issues are known and solutions are a search engine away.