Be sure to check out the free tools BP provides to help analyze deals you may have and also market insights.

Any tools, APIs, or approaches you’d recommend?

If you decide to revisit STRs, you might want to explore properties where you can project expenses independently, such as using local STR forums or online tools to estimate maintenance, management, and occupancy costs.For networking and strategy-building, you might find local meetups or groups beneficial.

BiggerPockets has some pro tools that let you see rent to price ratios and other cool stats, I use this to check out various markets and which seem to have better/worse profitability.

Leverage is one of the most powerful tools in real estate investing.

From the public website,The BetterLife Tribe program offers everything you need to achieve real estate success:Monthly Calls with Brandon Turner and top real estate experts, providing you with insider knowledge and strategies.1-on-1 Personalized Coaching to tailor a growth plan specific to your goals and challenges.Access to the reiOS System of Success, the exact operating system Brandon used to scale Open Door Capital to over $1B in assets.World-Class Real Estate Education and Tools that equip you with the skills to dominate any market.A Thriving Network of 1,000+ Active Investors ready to support, inspire, and challenge you on your journey.Seems like a great program like many do in the marketing materials

Use such credit as a tool though, not as a crutch. 

I have a included a link to a PM locator tool ready to go with recommendations in your preferred area.

Section 8 is best used as a risk mitigation tool for properties in super low income, high crime areas.

However, I’m looking for tools to help me analyze deals, particularly for multi-unit properties.