Here is some back ground.Tax Certificate, Former Owner is Still in Possession, Bought at 2018 Sale, Residential Structure on PropertyI was going to add casualty insurance to the property but was unsure if I need to wait for Tax Deed for the premiums to be included as an expense with redemption or if I add insurance with a certificate and owner is still in possession if those premiums+interest will count toward an expense at redemption.Any help would be appreciated.

What other major expenses should I be factoring in? 

I usually find appliances a couple of years old for dirt cheep, far less expensive than repairing major parts.

So, if you did 50/50, you would split the monthly profits (cash flow after operating expenses and debt service) and the proceeds at sale. 

There are now private market flood alternatives (not part of NFIP) that may or may not be better or less expensive. 

What I'm seeing with interest rates and taxes going up, are most places don't do more than just cover their operating expenses.

If you're able to get into a multifamily and reduce your monthly expenses you'd be able to pick back up where you left off, have an investment property, and possibly more monthly cash flow.  

What I'm seeing with interest rates and taxes going up, are most places don't do more than just cover their operating expenses.

That means more income without the acquisition expense. 

I said miiiiiiight because I have a feeling a lot of people in this area don't understand how much more expensive it got to live here because of "tax cuts".