I would also make sure you have a good amount set aside if something hits the fan.  

Or cut to the chase and try to get my team set from day one and learn on the fly?   

I would have set aside much more if i knew what a pain that would be.

Don't set up an LLC at all. 

If you are setting aside funds for capex, taxes, insurance, or other expenses that don't occur monthly, transfer those funds to Savings each month and hold them there until it's time to spend them.

We walked through a property that we went into thinking we were not going to like it and we ended up loving it and jumping on it pretty quickly after because the seller was getting other cash offers and the price/location/set-up of the property just fit our situation well. 

We really like the city of miami very familiar with zoning and set asides. are you looking for smaller developments like single family homes or construction under 5 million?

If you do the deal, ensure you have your property taxes set aside, because with seller financing there is not an impound process to handle the taxes and insurance. 

Quote from @Trent Reeve: on a side note, how big is this house that you sectioned it into three 3 bedroom/3 bath apartments?

You just need to have more reserves set aside compared to a single family.