Define if you want to buy and hold, flip, wholesale and then evolve into what you want long term.

Having spent time as a mortgage loan officer, I know that regulations for lending are constantly evolving and changing, usually becoming more strict as time goes on.  

For your own properties of course no real estate license is required.If you are just managing the online aspect of STR, then it sounds like you are doing something similar to evolve vacation rentals...they manage the STR and charge a 10% fee to the property owner.  

Think of it as a regular standalone software product though, one that is continually evolving that we constantly improve, add features, and update your system weekly (unlike other services).

.” - Wall Street Journal"The City of Indianapolis has evolved into a growth dynamo, setting standards of excellence for urban renewal and economic development" - Nation's Cities Weekly "You can share the delight...in this crossroads city for the almost breathtaking, tangible success of a revitalization program the likes of which most other older cities are lucky to get to the blueprint stage." - Los Angeles Times"Construction and development downtown seemed to wake the city up, and today, a thriving cultural scene mixes with Hoosier hospitality and charm

Over the past month I have began to use this more so I should probably take your feedback and@Brandon Stevens feedback and just evolve this into a full calculator/analyzer.

Yes, it's the right thinking, look at the amortization schedule and you can see where you'd be, simplist way.However, you should use an attroney to draft the note, not sure if that was clear, IF the safe act applies, if it does, there are restrictions on any balloon payment before 2/3 of the balance has been paid (unless that 2/3 has been changed as the regulations are still evolving, I've seen 1/2 as well) an attorney can tell you in your state.

If you do decide that self managing is a little more work than you are looking for, I know Evolve Vacation Rentals only charges 10%.

I am sure things have evolved since 2017!

Everyone has had very good suggestions so far.Remember that markets are ever evolving and what used to work in the past doesn't always work today or in the future.You have to appreciate that if you have no money and no credit you are probably going to have to have seller finance which means you won't get the best deal on the price...for a rehabber this is the kiss of death.