I think that could give me a big chance that the rent could cover 1.3k and maybe with a small lunch money as an extra.

As Sasha stated, that is at least $75k you need to bring to cover your current debts alone, plus closing costs on top of that.Leave the $280k @ 4.25% in place and find some way to pay off that construction loan. 

All that would be covered.

Most likely without properly screening potential buyers to see if they are even capable of buying your home2- you can list on your own on streeteasy, loopnet, and most property websites you go to search for homes on.

The questions you ask are good ones, but they cover too much territory to answer in an online post.PS.

You will pay $1100 (hopefully this will cover what remains of PITI as insurance in Florida is costly), maintenance/cap ex ($400/unit), pm (or do the work of the PM), Misc (book keeper, umbrella policy, office supplies, etc). 

You’ll cover the split fees and do the leg work for them.  

Usually they have a million dollar policy that can help cover the gaps liability wise.

@Logan Cooper why isn't your PMC doing a better job of screening applicants?

Why hold in Baltimore when you can hopefully get it vacant, sell it, and use the money for another property closer to you or use that money to build an ADU.Have you checked the regulations on ADU and impervious cover for your house?