anywhere in miami dade county you can go vertical. you just have to have the pockets 

When you say you want to prioritize cash flow over equity, you want to watch out for people honing in on that and selling you "good cash flow" deals which will be in D neighborhoods and will come with high capital expenditures and harder tenancies.

Tenants in lower Classes will have lower credit scores, which means higher chance of defaulting on their lease payments.

Your payment went up $1,000/mo but the taxes only went up $5,200 which would be less than $450/mo.

Their ability to recover their money should you default is much lower in this position.

If you get so large that you need to invest in technology, you'll likely need to get a sub-servicer anyway to do it for you and keep you compliant. 

I don't know that @Dave Foster earlier mention worked...I'll let him chime in as the expert, but you can 1031 for less it just results in 'boot' which is taxable.

Housing is still affordable compared to other markets, which keeps renters and investors coming.

I will add that to your question of 10% or 20%, you need to ask yourself whether you need the cashflow or not. 10% down would leave some money with which to buy more properties.

I recently came across 1 acre asking for 314k in a very good residential and growing location, so the current owner has added 4 manufactured homes with 4 electrical meters, 4 septic tanks and only 1 water meter for all 4 homes, the homes are sitting on partial slab and partial pier & beam, he also added 2 storage sheds approx. 380sqft with the intention to make them ADUs they are still only the shell so I would have to get those ready to live in, so currently the 4 manufactured homes are being rented and bringing in 2800k a month, 3 of the homes are needing some TLC which could increment rents and possibly get me at 3600k a month, also being a 1ac lot this still leaves about 12,000sqft of raw land where you could build etc.So that is on the good side now the things I did not like so much, the lay out is poorly executed to where it makes it looked crammed up and not professional but it could be fixed.Another is that in reality there is only 4 livable units so that qualifies under a conventional loan but since they're are 6 units on the property the banks are wanting to take it as a commercial so we would have to move out the 2 storage sheds out in order to close as conventional.Another concern, technically you are only allowed to have one manufactured house or single wide in your property according to what I know but I know it could change according to zoning which I will investigate, so my question is has all this been accounted for and if so how can I verify it so it wont leave me in a bind further down the road, I currently asked my agent for the appraisal of the property to see if that might verify.Any recommendations?