@Jay Fayz for SFR (1-4 family) Classifications are mostly opinion-based.Not aware of anyone tracking eviction rates, except Evictions Lab nonprofit that doesn't like landlords.Here's some info that might helpt:---------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Purchase price: $150,000 In the process of buying 1.21 acres in Isabela, Puerto Rico.

You could get everything in writing but you'd have to evict if purchase didn't go through.

Before seasoning period ends, I want to sell to my younger brother who purchases with conventional mortgage.Is there anything wrong with this idea?  

My metrics were to be all in purchase and renovation at or below 80% ARV. 

Not a one-time purchase.

You might find someone in your network who’s ready to sell a property, or someone who has advice specific to your market.Real estate investing is a journey of learning and growth.

If there's any specific concerns I could address I would be happy to. 

They might have insights on specific zip codes or pitfalls to avoid. https://www.biggerpockets.com/forums/521

If you can come up with specifics such as how you do your lead gen, an overview of your current pipeline and the reason why your deals are falling through it would be much easier to help out.