I also enjoy the construction aspect of real estate, therefore, want something I can spend time working on while building my real estate portfolio.

I'd like to be better prepared the next time I approach a bank or lender about financing.I've heard several guests on the podcast discuss having a packet of some kind portfolio or package that they present to lenders when trying to acquire financing.

Build/ then 'Sell one and Rent one ' Duplex units to build a small portfolio?

Entity is normally used for liability protection, but until you have a sizable real estate portfolio you will be just fine with adequate amount of liability insurance, be sure to get at least $300K to $500K of liability coverage on your landlord policy. 

I'd argue the bigger downside is potentially wiping out large amounts of equity built up in your portfolio.

I have a fairly decent income from my job and want to spend the next 10 years building a real estate portfolio.

Owner occupying a 2-4 unit is a great way to build a portfolio. 

I'd really like to keep the house in the family and establish a real estate portfolio in the process. 

Hey guys, my agent brought a portfolio of investment properties to my attention with good cash flow.

Foreclosures/bank owned are just fine - especially if the property is already in the REO portfolio of the bank.