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I support myself and travel the world by working online (teaching English and social media marketing). 

If there is a title insurer willing to issue owners coverage without exception to claims of unknown heirs or the use of a power of attorney (I highly doubt all your foreign sellers will travel to the US to dump this property), then things should be fine.That, however, does not eliminate the need to deal with FIRPTA.

Note: If you go to the same meeting each month, you can do detail tracking for a month, and can use same detail to estimate expense for rest of the year.( If nothing changed)2) Meals when traveling away from home - 50% is deductible unless the meal is provided to the general public (like Open houses) than it is 100% deductible.3) Expenses for Meeting with investor4) Expenses For Meeting with realtor5)Going to investors meetings.

It starts slowing for months and the early warning sign is increased inventory (non seasonal), then prices travel down over months or years.

I wonder if there’s anyway I could manage taking on these sister duplexes...or would I be stretching myself too thin?

We've had a few personal set backs but our current situation is I am the owner and my sister became licensed right before me.

Do investors travel to these properties to view them before making an offer, or at some point after an accepted offer (during inspection s)?

So you can deduct the cost of the travel while catching up with a friend or family member.

@Yogesh BhadaneScenario 1, you are factoring in Depreciation and PITI.Principal is not deductible for tax purposes.Furthermore, you may be forgetting other expenses such as travel, utilities, etc.I am still confused how after depreciation and PITI, the number is positive $10,000 but net profits becomes -$100.how is a number higher when factoring in depreciation?