I made an offer on the home and it has been accepted. 

Is there any banks offering a HELOC on a rental property?

There was no hesitation on our part... we own 37 doors (bought between 2018-2021) and managing our real estate is our full time job; but I want to offer you a corollary as to your "why does everyone wait" question... which is to say, "Maybe SOMETIMES they should be waiting..."  

Ben, I own a lending company that offers loans for investors.

The city offers a strong rental market and with affordability as well as a median home price below the national average, the city stands out as an attractive option.

Never mind that I have never had a problem with any landlords prior to dealing with this bum and always pay rent on time and always keep photo evidence of leaving properties in excellent condition. 

"The bidding starts at <60% FMV>" 4) After you get some bids on Sunday and the open house is over, you start going through the bidder list and calling everyone bu the highest bidder offering them to outbid the highest bidder. 5) You repeat step #4 until you bid up the price as high as you can.

I'd offer a discount for those who stay longer (eg weekly rate that is slightly less than 7 days). 

@Tim Silvers ask your title company if they offer an enhanced policy.

Every system you try will have flaws, or you may salivate over a feature that appears in other software.Some familiar names are mentioned frequently: Stessa, Apartments.com, RentRedi, TenantCloud, Innago, RentManager, Avail, Rentec Direct, Doorloop, etc.I recommend conducting thorough research on each app online to understand their offerings, pricing, etc.