Yes the average American income is barely $60,000 and most of people on bigger pockets make more than that and a lot of people make that much in a month. 

Do I want something a bit more active or passive (how much time do I want to spend on this property or property project) That should start help you narrowing things down a little and once you're clear on all of that you'll have different criteria to overlay on when looking at deals in Perth/Melb/USA to fitCheers

Some questions I have.1) Do you make enough from your houses that you can not only replace your income but also make enough that you can continue investing in real estate?

While Section 8 appears to promise "guaranteed" income, the reality is quite different.Section 8 typically covers about 80% of the rent with tenants responsible for the remaining 20%.

If the higher end rent prices on comparable units take an extra month to fill the vacancy and also the tenant stays 1-2 years instead of 3-4 years on average those landlord make LESS income charging that rental price ESPECIALLY if they pay a PM a placement fee upon turnover on top.

If you are still willing to stay in the same unit as your brother you can get a 2-4 unit building, rent out the other units and still rent a bedroom within your unit to your brother for extra income.

Income taxes are a lot higher on rental income. 

You likely will max out before 10 though as the average person with average income will have difficulty qualifying after a few loans because of things like the DTI (debt to income ratios).

What started as a promising BRRRR ended with us making the tough decision to sell at a loss after an unexpected disaster.The Numbers:Sold for: +$230KPurchase Price: $115KClosing Costs: $3KRehab Costs: $105K ($49K original rehab, $56K additional repairs due to the car crash)Holding Costs: $31K (12 months)Selling Costs: $16KInsurance Claim Recovery: +$25KNet Income: - $16KWhat Happened:This was supposed to be a BRRRR.

This will allow you separate business income and expenses from personal income and expenses.Since you plan to house hack your bookkeeping and tax return preparation will be more complicated because a percentage of your home expenses will be personal deductions and some will be business deductions.