For now, my goal is to purchase a 2 to 3 unit property on the island of O'ahu, preferably on the East/North side.

I'm open to recommendations if anyone has preferred lenders. 

That’s roughly $50K, but I prefer to use the cash for any personal emergencies.

I am open to investing anywhere in the US, but I prefer turnkey, single-family homes in the 100-200k range. 

They're $129,000 each but he would prefer all properties to be sold together.

What is the financing workaround for someone who would like to acquire 2-5 properties annually and prefers to develop and maintain a relationship with one banker?

AnalyzersI prefer the ones that come with video training. 

With that will bring headaches, repairs non stop, turnover, vacancy, evictions, etc.I prefer a hybrid of cash flow and appreciation and that’s why I invest in Columbus, Ohio where I can build long term wealth and have good fundamental real estate.

@Wala HabibyInvestment preferably duplex, triplex, but I will go with a SFH if nothings available

Although I typically prefer to work with mortgage brokers as opposed to banks, I would suggest reaching out to some local banks, possibly credit unions, and see if any of them have different loan stipulations that would allow you to purchase the owner-occupied duplex without a cosigner.