I'll echo what @Robb Almy said as it pertains to having the right LOCAL team in place, especially considering its your first project.

Also I will appreciate any other suggetion, tips, advice, and recommendation that does not pertain to my question. please teach me!

I have quite a few clients who self manage their vacation rentals from the mainland.Here is info directly off state of Hawaii website pertaining to vacation rentals (bold in mine):  If you’re off-island, you’ll need to designate a local contact who resides on the same island as the transient accommodation.

So, sellers can also be asked to sign notarized affidavits personally guaranteeing the validity of leases and ledgers.So now, let’s get to the clause to include on your purchase agreement to make sure you get all this information in enough time toreview it.Seller(s) agrees to provide the following to the buyer within X days of buyer’s satisfactory inspection, but in any case at leastX days before closing: All rental leases, rent ledgers, tenant(s) valid phone numbers and email addresses, rental applications& supporting tenant identification, income and asset information, any documents corresponding to any ongoing legalactions pertaining to the property, leases, service contracts, etc., at least three (3) months of the most recent bankstatements for any account(s) rental funds were paid into and any company or corporate tax returns for proof of income andexpenses.

We also began to receive notices from the city pertaining to code violations.

There is existing regulation pertaining to capping prices, meant to be used in a time of disaster. 

Simply providing information pertaining to legalities.

These are not actual commission rates, just used as an example to explain the math.)This also pertains to our  DC/MD/VA/PA business.

When I say "right away" that would pertain to a 2-4 unit for example.

This Duplex was built in the 80s and has good bones but the HVAC systems will need to be replaced soon and there has been no major updates that have been done but this is one of the reasons why i bought it. i wanted to get the experience of being a landlord and renovating  and managing multiple properties. but i have a few questions pertaining to the duplex house hack.