Now, your criteria might be different and, if it's your dream to buy something in Costa Rica irrespective of the profitability, don't give up but try to find a way to do it that makes sense.

Someone that can take me under their wing irrespective of potential financial benefit to them.

Irrespective of anyone's views, if you followed his principles you'd be a lot more stress free money wise and better situated in life.

There have already been a lot of good comments, but would add the following.Regarding your financing plans, recognize irrespective whether you are budgeting 15% or 20%, the loan will be based on market value - which for SFRs, will be based primarily on 'sales comparables'. 

Have the seller transfer the asset to you, irrespective to the seller financing agreement.  

In the US and Canada, most real estate wouldn't be worth investing without low interest rates and low interest rates are a thing of the past.Like-for-like properties are much cheaper in Mexico but, irrespective of the profitability, you still need to have the cash available, which seems to be your issue.

Educating landlords about the importance of treating all applicants with equality and fairness, irrespective of their race, religion, or any other protected characteristics, is paramount in fostering a positive, inclusive rental environment.

It's crucial to outline your requirements and seek a Property Manager who can fulfill all of them, irrespective of the cost.

Of course, if the cost seg savings were in the 32/35/37 tax brackets, then you'd be saving money irrespective of selling or not because you'd be recapturing at a lower tax bracket. 

and finally, this exchange can take place anywhere in the United Stated, irrespective of where properties A, B and C are?