This is a beautiful house - rehabbed/looking new and fresh - walking distance to the water etc, yet low gross yield  compared to Byrd (???)

We recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Over time, I’ve accumulated more cash reserves and don’t need as much flexibility, but I’m actually in the middle of a refinance right now using an interest-only mortgage—because the pricing with the lender and the corresponding ARM is more favorable than a comparable principal-and-interest loan.The key with these alternative or "exotic" mortgage types is that you need to be financially savvy and have a solid plan.

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

You can leverage the first deal you bought and your experience so far, which is a lot compared to someone starting.

It amazes me the nice cars, clothes, and general stuff that my renters have compared to what I own. 

What is the interest rate on borrowing compared to the rate you are earning, then take into consideration the tax consequences. 

I've been tracing wholesalers in califonia for months, like nothing other state finding individual wholasalers in califonia is quite challenging I don't know if it's because the house prices are too high compared to other markets.

Well you'd actually be netting more in the long run by doing so compared to putting it towards the home. 

Your new ARV(after repair value) should be supported by an adequate amount of comparable sales in the area(duplex's).