FSKAX (fidelity total market) FXAIX (fidelity s&p 500) and ONEQ (nasdaq eft) a few of the most basic simple investments have returned 8-12% annually over the last 3 years.

What's the best way to track your property income/expenses for tax purposes?

It's a bit of a luxury, but once it is set up properly, it is very easy to track income and expenses.

How quick you can scale will depend on your future work income as well as rent and equity appreciation in the property, but either way this is a good start. 

Yes definitely can do this . would be 50% down on the purchase and you'd get 100% of construction . no income no doc 

Do I have multiple exit strategies or avenues to generate income?

For steady income, Cleveland's a great choice with good cash flow potential.

and also do i have to put up any capital or when the title is handed over can i pay back the owner from the income of the property?

Learning from others' experiences and perspectives can provide valuable insights and help you make informed decisions.Have a Plan: Define your investment goals, whether it's building passive income, achieving financial independence, or growing your wealth over time.

The other 100K of gain's tax rate depends on where his other income is at.