If you want to be mentored your best bet is to go work for a company - most CRE is not a single individual and CRE is fast moving and things happen fast and you can't structure a "follow me to learn" without working for someone 

There are no standards or guidelines when negotiating a seller finance deal, since seller is acting as the bank all terms are negotiable.

As long as you follow the guidelines properly, it's not an issue. 

Typically, what I've seen is 1-4 is considered a residential loan and falls under Fannie Freddie guidelines. 

Now the seller has to convince his lender that it's a safe bet to lend money on to buy the house.

Here are the guidelines. 

That might be your best bet.

I am not aware of an expat group- though I'll bet there's at least a FB group that would do the trick. 

My opinion is that these builds will be super high end and expensive, but with affordability guidelines will bring online many income restricted units to add to the mix.Overall, I think the message is now resonating with public officials that we need SUPPLY over any other approach to address our housing crisis.

@Chris Guldi, while I have not done this type of deal before, I would think your best bet would be to go to the actual syndicators you know and ask if there is interest in partnering and what that partnership may look like.