Just put a offer in on a muiltifamily property. Tips and sugges?

[Seth Alexanderowicz]

Listing price 280,000

Offer 295,000

Average market rent 1400-1500

Income 2800

Expenses. 1400 Mortgage. 450 property tax. 200 insurance. 35 water. 100 vacancies. 200 repairs. Total = 2350-2400.est monthly expenses. 

Conventional loan 20 % down. 
59,000 down payment

10,000 closing cost. 
10,000 new roof. 25 year old roof. 
total money down 80,000 

6% cash on cash return plus I’m building equity in my house plus gaining tax benefit's from depreciation ect. This is my first property I’m currently in CT where I have stable job and family around. I’m not totally draining my cash reserves incase a correction does happen I’ll have some capital to deploy to off set buying at a higher end market. I know we are in a hot market but what do you guys think I would love some advise. Am I missing anything ? Please and thanks in advance. First property btw