As mentioned your biggest challenge is going to be selling the package at/close to same time. 

Not following the requirements (within Seattle city limits will likely have additional rules and regulations) opens the seller up to liability.Additionally, the seller always has the option of offering "cash for keys" arrangement but be sure that no funds change hands until after the property is vacated and locks are changed.John

He's still very much in contact and reachable, but my biggest fear is that he will run or file some sort of Bankruptcy.

Although instead of knowing about roofs and rehab.. land folks need to know about:Zoningwhere is the power  is there internethow deep are the wells or is its an area that water is super toughDoes it perc. and or how expensive are septic systems.Wetlands Etc.Now if you target land with all city services then its just dead simple.. figure out the retail value and buy below it and do your flip..

From talking to locals, there's a couple of issues than need to be addressed, some are the non-ecological practices that some of those developers have, unfortunately, our government profits from this investors and allows them to destroy manglers (which are the natural water purifying system of that area) dismantling hectares of mangroves and degraded the habitat of resident and migratory species burying animals alive.There's proof of fecal material floating beneath the city of Tulum, only 20% of the water is sent to the water treatment plant, there's no infrastructure for the exponential growth.The landfills in the middle of the jungle that is leaking hazardous pollutants into the freshwater system and that something that developers won't tell you.I love my country and it would be a disaster for everybody if this place ends up like some other great beaches around the world, that are completely ruined by greedy investors not following the rules.There's no urban or comprehensive master plan, and one of the risks is that Tulum will be like Playa del Carmen is today, overgrown and with environmental devastation.I will advise doing a lot of research before getting something in Tulum, different country, different rules, and practices.

Your construction background and being local to Columbus are huge advantages—they’ll definitely give you an edge in finding properties and keeping rehab costs down compared to others.I’d suggest exploring parts of the city you’re less familiar with.

The biggest impact to your credit is payment history.Next biggest impact is your credit card utilization. 

Good question, I think the biggest question will just be your overall timeframe and how quickly you want to get everything done. 

Tools were recovered and pest control was terminated.So we are naturally in a very secure area in one of the safest cities in CA.  

The biggest thing I have encountered in numerous inspections is chipped or flaking paint in pre-1978 homes that have children living in them.