I would recommend a gravel grinder, less race oriented cross bike, or touring bike (particularly and adventure touring). Probably want something that can take somewhat wider tires, 28-35 maybe depending on preference.

Based on the "gravel roads" comment, I would suggest considering the following bikes.

Specialized Tricross - different models at different price points, can handle wider tires, fender, racks etc. You could also look at a Specialized AWOL for more flexibility with tires, etc, but its a bit above your price point.

Trek Crossrip - Some similarities to the tricross, not sure what tire sizes it allows.

Salsa Vaya - another great option.