Financing through a personal loan usually offers better rates and lower costs, but using an LLC builds business credit for future investments.

@Thea Chard Rentvine has no mixed-use building type. 

That is a great nest egg to build upon, and it diversifies your wealth.

House hacking is one of my favorite investment and wealth building strategies.

I recently closed on a commercial condo unit (for retail), which is one unit in a building that also has 7 apartments. 

In addition tenants can choose to have their payments reported to a credit bureau to build their credit.

It will be a run down apartment building before long.

Since you're open to markets beyond NYC, you might want to connect with local investor meetups or REI groups in those areas to build relationships with agents, wholesalers, and lenders who understand the nuances of each market.If you're looking to break out of analysis paralysis, maybe start by narrowing down one or two target markets and running numbers on actual deals.

Finding a potential lot won’t be hard but getting a local municipality to give you the green light to build an MHP is going to be next to impossible.

Bonus Tip: If this quadruplex is out of state, I’d highly recommend building a reliable local team (cleaners, handymen, etc.) and maybe consider hiring a co-host or VA to help with day-to-day tasks, especially if you scale up.