That will def need to be factored in to my plan.

People sell at a discount when there is financial motivation, lifestyle motivation, or they want the "easy button". 

Factor how many properties a year you will purchase and or sell, factor that in to the costs and time of being licensed.

That being said, there are several other niche factors in operations and valuation for multifamily vs MHP, but MHP have less supply in solid markets which is makes the ability to scale much more difficult. 

What other key factors should I look into?

There maybe other non financial factors that weigh into your decisions that must be considered.

This can even be  a factor if use or distribution took place on the property.I'm looking forward to hearing your experience!

In 1998, he started Equity Lifestyle Properties (NYSE: ELS), the largest MHC REIT in the nation by market cap.

I love how Real Estate has so many different "flavors" and each person can tailor RE investing to suit their lifestyle.

So the appreciation factor is alluring as well.