(I've gotten around it by setting up mail forwarding from that address, which has so far successfully caught one out of three postcards)#3 - Once again, how do the major players do it?  

Trust me, you'll live.

But trust me, if the contractor runs off with your money, you will be glad you paid him less upfront and paid for the extra draw fee.

The more well-versed you are, the easier things will be and the more comfortable you will be talking to professionals throughout the process.2) Find a good real estate agent that you can trust.

I only keep enough cash in this account to pay monthly bills.They can use Chase Quick pay by Zelle, or BofA bill pay by Zelle, all they need is my email address to send me rent payment.

Hey BP family!Me and my business partner are looking to purchase our first investment property, classic House Hacking style! Would love to hear of any Real Estate Agents you've worked with in the past and would recomm...

The system that we use and that keeps things efficient is the series LLC combined with anonymity trusts.

When they do, they do so into an investment they trust, and especially in the case of real estate syndicates, with investment sponsors that they trust. 

If so, are there any requirements that need to be in place to qualify for the other address?  

That should give you the name and address of the owner, and the purchase price when they bought it.