It’s completely normal to feel a bit of analysis paralysis, especially when you’re in a position to make a move.The choice between a short-term rental (like Airbnb), long-term rentals, or a duplex comes down to your personal preferences and lifestyle.

Without a diligent and responsive professional, touring, offering and closing on a prime investment property of choice is less likely.

I need some advice on which choice makes the most sense starting off?

I’m also thinking about using an S-Corp or another passthrough entity for tax purposes.I'm looking to scale my real estate portfolio, and I know that starting sooner rather than later will be more beneficial in the long run.

Traditionally if you want to hedge against inflation, RE is a great choice.

So, you are left with the choice to proceed as is, negotiate a lower cost, get a concession, or walk away.I would get a quote and request a concession if they aren't interested in fixing it. 

Since you already decided to go with Quickbooks (good choice by the way!).

Bonus depreciation is highly beneficial because it can be used to offset any income, not just passive or real estate income.

Choices= bad, horrible or complete nightmare (paraphrasing). 

Thank you thoughCompetitive might have been a poor choice of words at my end.