Around my parts you can expect to pay $300 for something like that, so number 1 can get expensive if you do many offers. 2 is not scalable as you run out of favors, and 3 requires some level of education and/or experience. 

Sfhs are just not scalable.

I look at my return on the investment only factoring the interest portion of the mortgage payment but use the cash flow side to get a better idea on how the property will work with financing and scalability.  

Frankly, I'm more interested in the underlying technology such as scalable consensus algorithms, tighter smart contract languages, zero knowledge proofs, decentralized governance, etc.

While most of us here will give you advice based on scalability, i also think you need to consider investing some time in education to feel more confident in taking the right step.

I don't know how scalable our model is for you, but we plan to continue this approach. 

a majority of the bigger pockets community would agree that multifamily (aka apartment) investing is more lucrative and scalable than single family investing. you are in the right place to find out more about multifamily investing, search the blogs and forums to find all the information you will need.

I started with one and made sure to make everything I did scalable because of where I seen the roll going.

It pays well, but I built myself a nice job instead of the scalable business I thought it was.

Now that my time is worth more I delegate and outsource a lot of tasks which has been great for scalability and business development.By the way, I use Rentec for management and application processing.