I recommend high grading your properties to an absolute bare minimum 100k arv areas and to ensure expenses are reasonable 120k arv for single family. 

To give you a sense of who I am and how my skills fit into a BRRRR strategy:- I have a Bcomm Finance, and I took a couple courses on Real Estate financing in my major, and despite this being a solid 5 years ago, these were some of my best grades.

Since mobile homes are more affordable, the materials made of them are of a more lower-grade quality.

Good grades in school do not equate to higher earning.   

It is likely that the backyard would need some grading so that water drains properly. 

(Yes, is annoying and stupid and your situation is exactly the grade A example why) I would verbally communicate with the tenant and explain (in a 'nonthreatening') manner - don't use the terms like fine, fee, or "eviction" - that based on your understanding that they have not been impacted personally by COVID-19 insofar as income or ability to work that they should be able to, and you do expect them to continue to pay rent,   and while you will comply with all emergency orders, unpaid rent will continue to accrue and is expected to be repaid.    

Next is Structure items such as how the metal structure is, whats the site moisture conditions, is their tie-downs and what type are they, is it on grade, posts, free-standing, and especially roof coatings.

Very easy to get sued. the amount of money you'd drop just buying professional grade equipment and putting into the infrastructure of starting your business would probably cost more than just buying a duplex with a loan. plus I'm sure you need a license for that in Florida as well which probably requires some sort of insurance coverage at a minimum. some places require to have working experience but not everywhere. 

This is the list I've got in mind:The plumbing system.The electrical system.The structural condition.The heating and air conditioning systems.The basement and foundation.The roof and attic.Evidence of water penetration or grading issues.Appliances and other general components of the home.MoldNot sure about thesePests such as bugs and wildlife.Environmental issues such as radon, asbestos and lead paint.2.

Cleveland is the one I am most familiar with and it's also very popular with investors across the USA so I figured you'd get some value out of reading The Ultimate Guide to Grading Cleveland Neighborhoods.