My goal is to start doubling the amount of properties I buy each year with my business partner.

The deal is through that "Full Service Wholesaler" who will require a double closing (hence the $11,000 purchase closing) but list the finished project for sale at 1% sales commission, which would be $2000 plus my estimate of $3500 sales closing costs.

I'm in the process purchasing a double for sale by owner without a real estate agent. 

This is exactly what I did ... cash out refi'ed in 2012 my old bachelor pad which was a SFR turned into a rental at the time and doubled down using the cash out as a down payment on my new SFR primary residence in HB.

For short term ( 5-7 year plan), use the Double Declining Balance method - - and that's a bear to get right.Forget 'appreciation' as it is not realized until you sell and then you have to deal with Depreciation Recapture too.  

Orlando - Record number of visitors to a U.S. city- Nearly double U.S. job growth rate- $1.5 billion expansion of Orlando International Airport- Disney (Tourism)3.)

I would double check the zoning to make sure it is a legal four unit building.  55k for a four unit building sounds very cheap. 

What is your suggestion in my scenario....I have 30 total units ....comprised of 14 doubles and triples.  

I am Canadian and it's been recommended to me several times by accountants to just buy my first property in my own name with a large(5 Million $) umbrella insurance policy.If I buy in an L.L.C. it must be owned by an L.L.P. so I won't be double taxed  (U.S. then Canada).

We track water use for our well and a single leaking sink faucet doubled the use of 7 tenants.