This is more of a financial advice question in order to prepare for the next deal.

Letters and post cards work well if they are prepared well.

I have read many books and articles on the subject, but I'd like to hear some perspectives from others who have already started their investment journey: when you thought you were all prepared and put your plans into action, what unexpected and/or difficult issue(s) came up?

These lenders often consider the income-generating potential of the property rather than just personal credit history.Non-conventional Financing: Look for lenders who specialize in non-conventional or alternative financing options.

Any recommendations for companies or consultants who specialize in self-storage construction?

In the mobile home investing space, I've found the best source of information for market insight are the park manager and/or owners (if you're buying in a park) and mobile home dealerships (if buying out on land) as well as real estate agents who specialize in the niche. 

I am preparing myself with the right team of people to facilitate my upcoming real estate transactions.

I am currently a special education teacher looking to transition to real estate full time in the near future.My hobbies include staying up to date with the market, leatherworking, and being a geek/nerd with my friends!

You need to prepare for these operational cost increases that are out of your control.

There is some complaints about the smell but that is fairly typical for memory foam when they are first opened up.Others have said you really have to wait at least 72 hours for it to fully expand before using or putting anything on it.EDIT - This is a special buy and has 2 days and 14 hours before it expires. 7% have been claimed so far.