To be more specific about what i'm looking to do: My 1-2 year goal is to employ the BRRRR strategy with SFHs and Condos by buying distressed / highly undervalued properties that need work (preferably all-cash) in low crime areas with strong rental demand, renovate them within budget (again preferably all-cash) and get them rent ready before refinancing them at the highest ARV possible.

When they do HML on OO, they want very low risk.  

Would a low enough sales price make all of my concerns go away?

When revenue is low in the first couple of year, so is the interest payment.  

It possible that the market will stay low for a long time.

I think this is a calculation a lot of homeowners are making right now--especially if they have a low interest mortgage, equity, and their house will cashflow as a rental.The choice is a personal one of course, but I think your future self will thank you if you pull out some equity from your existing home with a HELOC for the downpayment on the next house and a cushion renting your current home, use a property manager as you have other things to do, and buy the next house and do the same thing again.

We have an extremely competitive market, huge demand and low inventory.

Inventory seems low, and I am trying to househack my first unit.

You should be able to go as low as 10-15% down payment with your experience.Ground up Financing: Most "ground up" financing options require a bit of experience - 3-5 exists (rehabbed & sold or rehabbed & refinanced in the last 3 years).

Last August a decent pre-foreclosure opportunity came available on the MLS and my agent took us to see the home and submitted two offers below asking that were too low for the seller at the time.Apparently the seller was able to avoid foreclosure and the home delisted after it didn’t sale.