@Joseph Palladini There are a lot of variables that will need to be considered. Since this seems like an investment property for the seller, why is he selling it? Is he/she underwater with the mortgage? Are their structural or hidden problems with the property he/she has not disclosed? Or maybe they are just tired of being a landlord?
I don't see where you would be getting the $400 in cash flow. What about cost of insurance? That may end up costing you as much as you pay for taxes. For a home built in 1970, you may be under-estimating monthly repair costs. I would bump it up to at least $120. Same thing with vacancy...bump up to $120. I typically keep my vacancy and repair estimates at 10% of monthly rental income. I would only change these items if I know the area does not see much vacancies or if I replaced everything breakable at the initial renovation phase. Some may feel my numbers are highly conservative, but I'd rather not be cash flow negative at the end of the day.
When does the lease for the current tenants end? Make sure you get a copy of the lease to ensure that the lease can be transferred to you after the sale (assuming you proceed with the deal).
I hope I'm not bursting your enthusiasm, but unless you can get a better purchase price for this one, walk away. Keep up the hunt regardless.