I want to let she my time and really ramp up having a consistent funnel of those leads coming in and mailing out to increase the odds of success monthly.

I take it you have used the local county auditors website to look up the current owners name and mailing address, if it isn't the current property. 

@Theresa HarrisLocksmith is the best route but not free.Check all of the windows, I have had to crawl through one or two before.For the cost of a stamp and a $1.69 key at Lowe’s the owner could mail you a key.Then you can get into jimmying, drilling locks, kicking doors in, etc. - but all of those are more likely to get the cops to show up

If this rental is in Florida make sure to comply with a Security Deposit disposition explaining deductions within 30 days of move out via certified mail.

I definitely like the idea of purchasing something fully renovated and ready to go for a piece of mind.

A person can find some prints to use for at best 8-12 unit complex but up to 50 units, an architect is essential and one who knows multi-unit housing and not some quazi-art piece of a building.

All mail and correspondence will be going to this address and forwarded via email and if necessary, physical pieces to my personal address.

I love the idea of multiple units on a piece of land.

My first piece of advice is get the best attorney you can afford because that will pay for itself in potential headaches and problems.

For primary home, I would definitely want to see it in person unless I had already mailed down a neighborhood and knew exactly what I wanted.