Question 5: At what point do I need to collect the proof of funds, earnest money deposit and purchase contract from the end buyer?

I will then go immediately into renovations, for which I have proof of funds. 

These programs even the gurus say consult with your attorney, make sure there are no Loophole's, stuff in fine print, what gets people, you know stuff you need a magnifying glass to see lol.

To register, an owner must provide a completed application, proof of ownership, designation of a responsible party, a copy of the City of Bradenton’s business tax receipt, a current and active license as a TPLE, a current certificate of registration from the Department of Revenue, an exterior site sketch, an interior building sketch, a blank rental agreement, and any pre-existing rental agreements.

2) On the second 'Hone Your Skills' bullet point, I'm getting an answer of $57000, not $63k like the back of the book says

My biggest tip I learned – Use the “search” function (the magnifying glass next to your profile icon) to search for your question BEFORE posting it on the forum.

You can click on the magnifying glass in the upper corner and search previous topics. 

I have a signed purchase agreement with the seller and have proof of being able to go through with the purchase on my end (financing good to go, title company set up, etc.).  

Are you buying it with cash and can you provide a proof of funds?

As long as you have proof of mailing you're okay on the time (not when she receives)  If you end up spending less to clean then you may have to refund some of the cost.