We received recommendations for the lender, insurance, and property management, and the team worked efficiently to close the deal on time.

I recommend walking from the property due to its age, rehab expense (which will likely go higher than estimated), and the parking challenges. 

I'd strongly recommend working with a broker that has access to multiple solutions rather than any captive carrier.

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Not sure what you mean by the capital stack.I recommend doing more research on understanding what you are investing in and understand all the what if situations, especially if investing $100k to start.

I believe there are Transaction Coordinators Pace's group uses that can provide a recommendation in your area.

If you're thinking about getting an aged shelf corp, I'd definitely recommend giving them a look.

Consulting a real estate attorney is highly recommended, especially for complex transactions or if the standard forms need modifications.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

I'd recommend contacting Colorado Realty and Property Management.