I would think the two main things to worry about would be building inspector and the inspections when you get ready to sell. 

So my main reason behind this post or “question” is.

I am a welder by trade, and I have a small side business of repairs and fabrication to add to my main income.

Looks like you're casting a pretty wide net; where are you mainly based out of?

Profit margin, proximity to home, and the fact that it was mainly just cosmetic renovation.

My main interest is buying a multifamily and occupying it. 

I have an interview with someone for a loan processor position and one of my main concerns is getting hired on and not getting to the LO position fast enough.Do you think it’s wise to take a Loan Processor position (if offered) and then be promoted?

There were a few unexpected repairs during the first year, but I attribute them mainly to poor maintenance of the previous landlord and tenants.Lessons learned?

Read Charles Becker of Duke University's article on this very topic for greater insight.Another difference is that Class B/C apartments typically need a huge amount of expensive cap-x to maintain their occupancy, while mobile home parks need a much lower amount since the park does not own the homes (or at least many of the homes in most cases), although this is true whether there is a recession or not.The final main difference is that apartments sell at much lower cap rates, so there is less cushion in the event of a recession, while mobile home parks still sell about 1 to 2 points higher in cap rate, so you have more flexibility to contend with the impact of a recession, whatever it may be.

Our main issues is that we don't have a network, we don't know where to start as a good investment that will grow fast into several new investments.