Minor question: does there exist a chrome extension which gives you a hotkey for clicking on the first result of a google search? (I'm running Ubuntu.)
You dont need an Extension.. You can modify the default google search engine to search as "I'm Feeling Lucky".. That'll take you to the first result.
Do this :
Go to Options > Basic > Default Search > Manage..
Add a new search engine with the specification
Now search and check if it works as you want it.. :)