Rehab costs, taxes, and interest during this phase increase the depreciable basis, providing long-term tax benefits.

Would it make more sense to move the money we make from selling to a different property that could potentially increase our cash flow? 

Repairs made while the property is your primary residence are not deductible, but improvements can increase your cost basis, reducing future capital gains tax when you sell.

Looking for a house we could house hack, had an incredibly low interest rate on mortgage and house has increased in value about 42%, an estimated 180k in equity.

These rules have increased risks by making it difficult to get rid of poor tenants that pay their rent.

That does not require employment or job seasoning instead it uses the rents to qualify and you can take out up to 80% LTV cash.Use the cash to put down on the next 1-2 or more properties as long as the other properties are debt servicing themselves it opens up more opportuities to buy more future assets and increase your passice income.  

@John Perkins Help you find lenders that can increase your profitability on your projects and perhaps help you scale!

I would slow down and think about your BUDGET, what you can get for $30k, and how you can increase your income.

Who cares about lifetime interest costs, except to the extent you can easily lower them (refinance to a lower interest rate) to increase your cashflow.

Or is it calculated daily and the base rent increases after 10 days when the late fee hits the account?