Unfortunately you dont always get to have the broker give you the key code to unlock the key.

So I like it all the way up to the $.99 charge to the prospect and the fact that they get a key.I want a code on the door that once authorized unlocks the door, and then automatically locks it behind them (like 30 seconds or so after the door is closed). 

Usually a garage door opener is left out and door from garage was left unlocked. 

I don't want to burn my Saturdays running around unlocking doors for prospective buyers/tenants or meeting up with contractors to pay them or sitting in front of the computer on a Sunday night to make sure I get the craigslist ads posted, and then turn my phone volume on max loud to make sure I don't miss any calls about my properties. 

Especially the part on unlocking the keys to getting a "yes" from your lender.

This is a way to transition a property and unlock higher rents and value over time.

Your HELOC won't likely unlock more than 80% LTV of funds so you could consider selling one of the two properties.  

3) I am allowing potential buyers to inspect unlocked public areas?

Only additional fees I charge are for if I have go attend an HOA meeting due to the tenant, have to unlock their door, or have to replace something like a garage door opener.

Once you've got a good agent, he or she will unlock the rest of the pieces for you, as they should have contacts for the other pieces of your real estate team.