I would personally go with a touring bike. They are a bit more comfortable than CX bikes, definitely more versatile in terms of weight carrying, extra accessories and so on... plus they are not slow at all!
My Cannondale has road gearing shimano 105 all over, and is very light for what it is: like real light for a non-racing bike, without all the accessories on it of course.

The touring bike can take all the beating of rough roads, hard environment and still be true and reliable. The wheels are tough, the frame is tough, handling is stable, and posture is great!

Not all touring bikes are made equal, you have to choose what suites you better. A hard core tourer will never choose the bike that I chose with its 100% pure road gearing (30/39/50 x 12-27), but I personally do not use my bike exclusively for touring, rather it is more like a commuter, trainer, recreational bike for me...
Some touring bikes come with flat handle bars, others with thin tires, without fenders, with lights, etc... Any stock configuration can be tweaked, but it is always better to buy the model you will modify the least, gearing being a fundamental part!

Here's a picture of my do it all bike: