Im thinking of renting out my primary which will cashflow $650 (no management fee, self manage) because of low interest rate i got it for 2% which still has 2 years before rates renew. 

I own a property management company in Vegas.

The GC is mostly a project manager, and if they are good, this adds so much value. 

Passive income is something talked about, but the majority of real estate investing is far from passive and what is called passive has payments for the passivity (management).Your why is strong, to provide generational wealth for your family and likely achieve time freedom long-term, that's awesome.

.) , but appreciation has helped, the tenant is great, I have a property manager. 

A decent portion of S8 tenants don't pay their portion of rent or utilities - sticking it to their landlord.Forget about using the threat of having their voucher taken away, as that doesn't really happen any more:(We manage almost 700 doors in Metro Detroit with almost 100 S8 tenants.

and would ideally like to set my sights higher so that within 10 years my husband can leave his teaching job and work with me in managing our properties.

Hello Jerome, If you buy a BP pro membership you get free access to rentredi, a property management software that does have the features you seem to be looking for.

For a $300,000 property, this could be $6,000 to $15,000.Mortgage on Rental Property:Loan Amount: $240,000 (assuming 80% financed at 4% interest over 30 years).Monthly Payment: Approximately $1,145.Other Expenses:Property Taxes: Estimated at 1.5% of property value annually ($4,500).Insurance: Estimated at $1,500 annually.Maintenance: Estimated at 1% of property value annually ($3,000).Property Management Fees: Assuming 10% of monthly rental income ($2,400 annually if rent is $2,000 per month).Vacancy and Turnover Costs: Estimated at 5% of annual rental income ($1,200).Total Initial Investment and Annual Operating ExpensesInitial Investment:Total Borrowed from Equity: $150,000Down Payment for Rental Property: $60,000Closing Costs for Rental Property: $10,500 (average)Total Initial Cash Outlay: $70,500 (initial investment from equity) + $10,500 (closing costs)Annual Operating Expenses:Property Taxes: $4,500Insurance: $1,500Maintenance: $3,000Property Management Fees: $2,400Vacancy and Turnover Costs: $1,200Total Operating Expenses: $12,600 annuallyExpected ReturnRental Income:Assuming $2,000 per month, annual rental income = $24,000.Net Operating Income (NOI):Annual Rental Income: $24,000Minus Annual Operating Expenses: $12,600NOI: $11,400Debt Service:Mortgage Payment on Rental Property: $1,145 per month, $13,740 annually.Total Debt Service: $13,740 (rental property) + $8,592 (equity loan) = $22,332 annually.Net Cash Flow:NOI: $11,400Minus Debt Service: $22,332Net Cash Flow: -$10,932 annually (negative cash flow initially due to high debt service).Cash-on-Cash ReturnInitial Cash Investment: $70,500Net Cash Flow (first year): -$10,932Cash-on-Cash Return: Not applicable initially due to negative cash flow.Long-Term Appreciation and AdjustmentsProperty Appreciation:Assuming a 3% annual appreciation, the property value could increase by $9,000 annually.Rent Increases:Assuming a 2% annual rent increase, rental income will rise, improving cash flow over time.

It may be working for another developer would have the most value, or a GC, Project Manager, etc.