However, asset based loan products require liquid assets, property equity is not a liquid asset for an asset based program.All our 2nd mortgage programs just increased limits to $750,000!

While I certainly think that reducing retirement account contributions and investing in real estate could be a great option for an early retirement, it requires honest conversations and detailed projections around your current portfolio's performance and expected rate of return on future acquisitions.

Dwelling/Fire policies require that you request a limit for contents.3.

To avoid reducing your lifetime exemption, you could gift equity incrementally, but this requires proper legal structuring (e.g., fractional ownership transfers).

For MOST counties the time period is at least 3 days notice required (for your tenant to comply).  

The city may require more off-street parking as well.

Low cash flow requires larger reserves.  

What you need to do is figure out what the set backs are that are required, and see what you can do.

@Joshua Tucker Building real estate on tribal land offers unique tax benefits, but it requires careful planning and collaboration with tribal authorities.

A smart seller/listing agent will likely require a large EMD to tie you to performing on your offer, so be prepared for that.