I also have most questions they could ask as part of my online listing (application fees, pet fee, W/D hookups, etc.). 

I did have a deal fall through- triplex was only legally a duplex and became a nightmare project after the inspection.

I've seen some differing view on if this is legal or at minimum troublesome so would need to consult an attorney when/if we get to that point.I'm thinking on $500k home 3% Option, 2 year lease option at today's market price + say 2% annual appreciation, so $520,000. 

won't allow me to provide specific legal advice in the forum context, I'll be happy to do what I can to give general overviews and talk about some of the issues to be aware of in real estate deals.  

Found a property, made offer and my first obstacle I encountered was when I checked online my credit score was 752, I thought good to go.

I found a couple sites but i wanted to see if anyone had any experience/advice on which school i should go with, and if online or in-person classes are better/worse or if it makes no difference.

how much is it to get something online?

I also need to go about it in a legally acceptable way so that I am minimizing my risk of lawsuits and liens.

Or ads online because of the high tech influence?

There are only two ways to legally Wholesale in Florida .