I'd be happy to help you explore opportunities here and provide more detailed insights.

I have experience with commercial construction loans and cash-out refinancing after construction completion, but no experience with refinancing raw land yet.

Once I started paying off loans and raising rents, years of suspended losses went away fast. 

In an  Office or Industrial project, competing business can co-exist as neighbors because they are generally providing a service for which the "playing field" is away from the property.

With the STR strategy you potentially go with the 10% down second home occupancy loan that comes with a lower interest rate

In terms of your financing question, the majority of loans we do are in that $1m to $5m range, so that's not an issue at all (fake numbers wasting everyone's time would of course be an issue, but let's stipulate that it's solved).

We plan to take a loan against this house (home equity loan or refinance) for 75% of its value, hopefully.

We have several projects in the pipeline that will require re-development and any help you can provide would be deeply appreciated!

Is there a possibility to get another loan for rehab, fix everything up, and then try to sell and pay back the loan? 

Tools like Zillow, Realtor.com, and local real estate websites can provide valuable insights.Choosing a market involves balancing risk and potential return.