Help me analyze this 2 unit Philadelphia deal

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Im analyzing deals and found a duplex 4 bedrooms 2bd in each unit. Cost is 285k im not sure what the closing cost will be im estimating the following Purchase price 285k Closing cost 6k Rehab 15k @4.75% conventional Down payment 5% 15k I dont know what rent for the area but i look and see maybe $1400 each unit Im doing $80 for water per month $125 insurance month $200 repairs per month $300 taxes per month $1487 Mortgage $700 plus Cash flow Am i missing anything ?