A) it controls my cost.

If you are looking to buy in PA, its possible you can qualify for PHA KFIT program that gives you a 5% closing cost forgivable loan.

Cash flow approximately 350 a month.Option 2: Use the cash to buy land to build a 6 bed 4 bath duplex, all in cost approximately 300k/330k. 

The cost shouldn’t be double what a duplex is, but should likely be less per unit.

They are a bit undersized but perfectly suitable for 1 bedroom apartments and the slight increase in costs is far less than the costs associated with venting the units properly.

@Yooni Choi managing from out of state (OOS) with ZERO previous landlord experience - probably won't go well.You WILL make a lot of mistakes that will cost you money.

That is part of the cost of investing.  

Here are my two cents...I recommend starting in a market with strong fundamentals, such as steady population growth, an influx of major corporations or large businesses relocating to the area, an affordable cost of living, and high rental demand.

A nightstand or dining with 70 pieces is a major bottleneck and keeps your team from moving onto other tasks, whereas one that is already assembled might cost $50-100 more but only takes minutes to unpack. 

Given the latter costs, a corporation can be the best solution only if you buy multiple properties.