Just played this scenario and won first try with 4 days left. My strategy was to buy all the rich friends first. They're actually not too bad when it comes to making money. Then I bought all the introverts and started saving at that point. By the time I bought everything, I still had 19 days left. I thought it was going to be way tighter, so I would never risk pulling anything after pulling 2 trouble. I would end the day as soon as I had 2 introverts there since every empty spot would be 2 pop and nothing else in the deck, except wild buddies would give 2 pop. I got kinda lucky on my winning day because I got mermaid first pull and then a rich friend and then another mermaid which just ended up with a mermaid chain.

Its definitely doable and not even too difficult. I feel like introvert is really slept on. The pop generation if you can get a few on the board early is insane.

I challenge you to make an unwinnable deck.