It will allow you to roll existing retirement funds into the 401k (save Roth IRA) and self direct those funds.  

However, after you get some experience, you probably want to get a Private Lender since this will allow you to keep the majority of the profits.

I’ve done some research and have found that some banks will allow the seller finance portion from the seller to go towards the down payment of the loan, is that true?

Yielding 80K a year for allowing me to use their money to fund the deal for 7 years.

.- Many of these HCOL areas also have strict limitations on AirBnB or short-term rentals... that do not apply to owner-occupants - thus allowing for extreme cashflow potential for house-hackers.

However short contract period allows you to pursue other avenues to sell if the wholesaler can't execute on the terms they offered.

If the permanent financing will allow you to recover most of your initial investment and the fair market rent covers the principal, interest taxes, and insurance with cash left over, you have a BRRRR.

The provider I am using allows for 60 days of continued coverage once construction is completed.

The first warning I always do written (via email), second warning is an official letter on their door saying they're violating their lease to allow other residents the right of enjoyment (if you put this in your lease).

Although in the last couple deals most have come out as 506C deals where only accredited investors are allowed, there are still 506B syndications where you can be a sophisticated investor (self proclaimed) so you don't have to be accredited.