I'm finishing renovations on a studio apartment (under another unit in a multi-family) in the next few days and am trying to decide on what strategy to use to rent it.

The "big" firms like AA may get a lot of hype but they generally can't compete on the next level tax strategies (Family office type strategies) nor customer service as their employee turnover is quite high.  

There isn't a lot of strategy to just buying a new build.

There are a few strategies you might consider to accelerate things.One option is a cash-out refinance.

If you’re not satisfied with your current attorney’s approach, it may be worth seeking a second opinion to explore other strategies or angles you might not have considered.Next, focus on compliance with housing codes and tenant protection agencies like DCF.

Exit Strategy: When do you plan to sell the property?

My main focus is multi-family house hacking, but I’m open to other strategies as well.I’ve always had a passion for real estate and decided to move to a market with strong rental potential and affordability.

This is what makes the hard money to DSCR combo a great one-two punch for the BRRRR Strategy. 

Proof of concept seems to be a key part of your strategy starting off.   

I'm eager to learn more about:Identifying undervalued properties: Are there any specific strategies or resources you recommend for finding deals below market value?