I must admit that the third key result "100 people are waiting for that application" is the hardest for me.
I'm not a seller. I know who will get most from using OKRs - People like you and me who want to focus on their project, who want to achieve something.
I'm quite confident about "At the end of the Q3 first version of the site is running" key result. But 100 potential users seams very hard.
Nevertheless, if you want to help me, you can subscribe to Product Hunt waiting list https://www.producthunt.com/upcoming/focusokr
For now, I have 19 subscribers.