It depends on how much capital you have (aka, do you need a mortgage), how quickly you can identify properties with solid flip potential, how great a your contractor is, and how long it takes for you to execute.With that in mind, especially when starting, I would not suggest flipping multiple properties at once.

@Megan Winterberg if I were to offer a suggestion it would be 1) identify your desired market (steady population growth, job growth, rent growth, decrease in crime, household income and value) www.city-data.com can provide a lot of useful metrics.2) identify your submarket using same approach as above.

If you contact those banks and identify the ones who lend on parks and explain your situation, you should be able to get a lender for the park. 

As you start your BRRRRing journey, it will be helpful to practice analyzing deals on your own so that you can start to identify what would qualify as a good deal to you, and you wouldn't have to rely 100% on what anyone tells you.

I also like to do a thorough walk through of the apartment and provide them with a property condition form that they are to complete that identifies any damages or problems that exist.  

Example) 1) Gentrification - how does one identify this in any given area?

Once you identify a property that looks vacant, what is your next step? 

Was much more thorough in identifying the next renters who have been long-term tenants in the property.

Operationally, you want to understand the business plan, the market, the team that is executing the business plan, and all the other various factors that you would use to identify any investment. 

The form identifies by line item the various kinds of closing costs.