I’d probably create an operating “shell” entity that did all my business (just you) and then create individual property entities with investors that are used to own each property.

I want to create a team where we all bring something to the table and we all eat!

He used his youth and the principles of the "snowball effect" to create generational wealth that can still be seen today with modern manWho was the first landlord?

Right now the house is a 3 bed/1.5 bath but if we can create a 4th bedroom in the basement and turn the half bath into a full bath I think we could rent the house out to students for at least $2,000 a month and have a nice cash flowing property.

Since you've already taken title it won't work.An attempt to create mid line entities right now unless handled at arms length for retail would probably result in a step transaction. 

You can create an IRR calculator in excel which definitely read about as the IRR function is best if only basing it on yearly inflows and outflows.

From the day I turned 18 I began creating credit for myself to make this happen. 

It also leaves nowhere to add Person D.I also don't want to create a lease that just runs from April to June because that would give Persons A and B a chance to change their mind at the last minute and decide to move out as well in June.Thanks for any suggestions.

There is minuscule chance, an average Joe who wants to be successful in Real Estate, other than borrowing money from family, having many friends, raising capital via syndications, creating a Corporate Entity, ( which necessarily don’t impress me, there 100 unit apartments, over leveraged, I could do in my sleep!

Does not matter - if you have a different EIN - you should create a separate QuickBooks file.