Will buying a rental hurt my personal borrowing power?

[Dan Costantino]

If I buy a property in an LP, but have to personally guarantee, I would assume that would hurt my debt to income ratio, correct? Or does it only hurt me if the cash flow is less than 25% (I heard that from a fellow investor).
$80k Price of Bank Owned Home (Might need $2k in updates)
$16,000 Down
Gross Rent $10,200 ($850/mo)
Monthly PITI $650

House is worth roughly $95,000 on the market.

To me, this doesn't seem like enough cash flow.

Thoughts?