It looks like a very reasonable bike for that price. It is still more of a mountain bike than what I would consider a multi-surface bike. If you are only packed dirt with a bit of gravel, the front end suspension may be overkill and you might be able to get another bike in a similar price range that is more like a cyclocross bike. It would be lighter and faster and can handle gravel just fine. For example this bike which is just slightly more expensive and is also a WSD bike.