You have provided us your numbers but not the thought process on how you got there, so it is hard to provide any input.For example, how do you determine that this property can achieve $2K per month in rent? 

Others have achieved success by using their education and producing income thru their deals. 

They do a pretty good job of trying to curate a wide variety of investing approaches/styles -- and you're likely to hear one or two that jump out to you. 

Although, now that I am getting my Hawaiian real estate license working with KW Kauai, I will need a whole remodel of my current website to format the code of ethics and way of working agency/brokerage style to help buyers and sellers.

To achieve this end, it requires a re-wiring of the perception of security in shelter.

The second FHA use for a fourplex may be a bit more difficult as you'll probably have to prove this property is superior or more suitable as a primary residence then the one you're leaving to convince the underwriter that it will be in fact be a primary residence.This way you still have access to the equity from the first fourplex via the line of credit and still achieve your acquisition of the new fourplex with FHA.

Currently the seller is doing this exact same strategy and achieving a $50 to $75 rent premium on upgraded units.

So when they see you achieving and doing what they still wish they were working toward it's natural for them to feel uncomfortable and try to talk your success down as it makes them feel better about their own situation.One big misconception is people think someone gets lucky and all this success happened to them. if you read almost any of the books of highly successful people they had many failures.

It seems to me like grey is the new beige and the current style trends are moving away from beige and opting for a blue/grey tone instead. 

You have to decide what "protection" you're seeking and what options you have for achieving it.