Would this Optiplex 3040 be a good BI system

[omegatek]

Looking to run about 4 - 5 Hikvision 4MP (DS-2CD2142FWD-IS-2.8MM)
Found a Refurb Optiplex 3040 with 6th Gen i5-6500 (3.6Ghz), 500GB HD, 8GB Single Channel DDR3L, Windows 10 Pro, 3yr warranty for $395 with coupon from Dell Outlet. Reg price is $609

Is that a good price or should I keep looking?

Thanks