Yes to both, but you'll want to replace Run "Script 2" with engine.run_script("Script 2") to use AutoKey's syntax to run the second script.

You can see a demonstration of that in the Run an AutoKey script from another AutoKey script section of the AutoKey wiki's Basic Scripts page.

Also, the Start external scripts section of the AutoKey wiki's Basic Scripts page demonstrates how to run a Bash script from inside of an AutoKey script.

In case you haven't explored it yet, you can find the AutoKey wiki here. You may find the Example Scripts page especially interesting. It's filled with lots of examples and you're welcome to contribute some of your own if you like.

Last, but not least, I noticed that you're using the keyboard.send_key() method in your script. Both that and the keyboard.send_keys() method can be used to send a single keystroke, but they behave differently. See this note in the Key Combinations page of the wiki for a description of the difference. Notes about this have also now been added to the Send key and Send keys sections of the API Examples page.