I regularly drive for dollars now to find deals but I'm still uncertain about some things.

When you are starting out, higher leverage seems natural.  

Not just the money, but the personal satisfaction of knowing you built something yourself and have succeeded, I could never go back to working a regular job.

Since it's a line of credit, interest won't be charged until you use it instead of a regular personal installment loan.

I am looking at my first deal, naturally, I'm excited but I don't want that to fog up the logic in the numbers.

Are you more of a sales minded guy, or are you naturally a systems person?

Does anyone have any experience or regularly attend meetings in the Nashville/Tennessee area that they might recommend?

It does cash flow better then a SFH, you are correct.In my case:- it had to be re-zoned as MF with the city- an additional post office address had to setup (1A, 2B)- natural gas line was split and 2nd meter was added- 2nd electrical meter was added outside- 2nd electrical circuit breaker panel was added in the basement next to the other panel, and all the wiring for upstairs unit was moved into it- city does not allow for a split up of incoming water to add 2nd meter so both units have to share it.

What cities (or areas within the city) have you seen hit a nice sweet spot between cashflow and natural appreciation, and why do you think it's a good opportunity?

On top of changing rules regularly, and threatening fines for rules that were changed the next week, they never did the initial inspection with the builder.