Depends what you mean by "what you need" as far as active monitoring and controlling you got the two biggies down Temperature and pH, so you should be good there. The price isn't bad, I don't think it's by any means a steal, marine depot has them going for $280, the pH probes do need to be replaced periodically so hope you have a feel for how long its been used, aquanotes is a bit pricy assuming its the pay version and not the free one.
But its not a bad setup.