Recognize due to the leverage that is possible with RE, the return from appreciation is magnified.  

Your scenario is possible but not probable...admittedly I have never done what you suggest I've been the seller financing sales in my IRA, but I have read several BP contributors that have substituted collateral.

In those days it was possible to locate and tie up a “killer” deal, and close the transaction with absolutely zero of the investors own money.

A more realistic expectation is 24 hours which will ensure we can arrange any repairs or corrections with a team, handle it in person, etc. be curious how this plays out as I worked for local developer for a while and developed several properties in Alexandria (Specifically old town) and while the city is challenging like any city - they were mostly realistic.

But also, is it even possible to get a rental property when I'm 18 with little money?

I am just starting out and have 1 STR.Would love hear the pros/cons that you took into consideration when deciding how you want to manage your STR.Self managing STR properties, from afar, while maintaining other employment, is only a possibility because of the new technology made available in the last 10 - 15 years.  

You have to tell people if a toy is broken, missing pieces, or might explode when played with.

I'm hoping to buy something in the $300K-$400K range so I'd like the highest quality tenant possible in that price range.

IBAs are possible just looking for more outlets.

I imagine the only way it would be possible is to do the bulk purchase in cash, sell off a couple and then put debt on them?