If they don't trust you, they will only invest with you if the returns are really high and the security is ample.  

My long term goal/strategy is to have ample cashflow through properties/rentals in US, so i can leave my full time job and settle in US to manage my portfolio. 

The 2% rule is definitely attainable here.  

If you've done a few you should have CF or investment criteria that you are looking for and I would hold out for that assuming they are realistic and attainable.

You'll definitely want to familiarize yourself with the areas where those numbers are attainable, as they can vary quite a bit.Another option I'd recommend is exploring a small multifamily around here.

This way if you ever plan on adding amenities like A/c, you'll have ample power with a 200 amp panel.

However I have ample cash to cover my living expenses for many years.

Air make up kits (something called a scuttle) can be installed to provide ample fresh air for combustion.

He has enough money to attain his goal of having a zero carbon footprint, so from that I would conclude if that's what he wants, he probably has it!

Residents enjoy ample on-site parking, private yard spaces, attached garages, washer/dryer hook-ups, and the private community feel.