I've been told that roughly speaking you should keep much more than a million dollars in assets in one LLC but this is all subjective and personal preference based on your risk tolerances. 

But even this is subjective, since nicely remodeled will have a premium to dated, but an unusable, large home will sell at a discount when viewed as per sq ft value.For a comparable finish quality, on equally desirable street in same neighborhood, we have sold properties almost exactly at the same per sq ft price as smaller properties, but they were equally usable as their smaller counterparts, i.e. 2,900 sq ft 4 bed 3.5 bath versus a 1,900 sq ft renovated house 3 bed 2.5 bath

If the property really wasn't yours and you were more of a nominee/agent with your name on all the legal documentation on behalf of your parents, in all likelihood if the IRS audited you and had all the facts, they would probably disregard the legal ownership and treat your parents as the true owners for US tax purposes.Even if it was a gift, gifts are not subject to income tax but would be includable in your estate and since your non-US person parents were gifting US real estate, they would be subject to US gift tax on the excess of the gift above the annual exclusion (15k I believe).

But the establishing of an Independent Government is a totally different subject.

You can buy using seller financing or you can buy "subject to" the existing financing.

In the limited reading I've done thus far, the authors touch on this subject in only the most general terms -- i.e. to evaluate a market, one should consider population growth, economic conditions, infrastructure, average cap rates, housing supply and demand, etc.

Not the person who's just trolling their home out there and won't take a discounted/wholesale offer. 3)ARV is established by running comparable sales of other homes similar to your subject deal.

Doing flips or any other active business is fully subject to UBIT, making it even worse than rentals.

If so, there might be an opportunity here, but make it clear to him you would either be assuming his payments ("subject to" purchase) or paying off his lender through escrow.

My goal is to buy very profitable buy and hold. the subject property is not profitable at all.