We moved to bigger house with better schools and rented out house to learn how rental works and to see if we want to do it.  Its been rented out for 7 months ( so far so good) and we have another couple months to deci...

Only thing I personally would want to look into prior to closing, would be the electrical.

If you end up pursuing seller financing, make sure you have insurance in place PRIOR TO CLOSING.

Here's the interesting part:They're only asking $9k because the house needs to be raised prior to repairs because of flood zone.I know raising a house is expensive and would take a huge chunk of repair budget, but with asking price that low, should I try to get this as my first BRRRR?

You can deed the property into your personal name if you choose prior to closing. 

If you can rent the property prior to refinancing it this will probably be beneficial for you since you'll have the lease to prove that the property is generating income.

We went through about 3 different 'accountants' prior to just buckling down and hiring a real firm.

It’s a sort of one-of-a-kind situation where the owner is allowing some modifications prior to inspection because the building is mostly vacant, and no rush to sell. 

Prior to accepting the tenant, I asked my husband if the tenants had a prior eviction and he said they didn't even though we dont have proof of that.

Yes have him sign a new lease with you prior to closing.