Consider defining clear roles, ownership percentages, and responsibilities upfront, and ensure you’re protected if the partnership doesn’t work out.Since you already own properties, it might be worth consulting a CPA who specializes in real estate for advice on tax strategies specific to your situation.

Are there any particular markets or investment strategies you’re leaning toward?

If so, what strategies worked for you?

A common strategy I see with diversification exchanges, is that the investor will purchase the first property cash and the second with a mortgage.

.- Does anyone see any flaws or can offer some improvements/considerations to the financing strategy of this plan? 

Have a strong partnership agreement that clearly defines roles and responsibilities, profit sharing, exist strategy, etc.

I have listened to a podcasts with other doctors talking about this, Anywhere else I can find info or advice or strategies on similar situations?

The seller will always retain the equity and would receive annual distributions - and could structure the agreement with an exit strategy that makes them comfortable. 

I’d love to hear your thoughts on strategies that have worked for you.

It’s pretty much a reversal of the Roth conversion strategy.