BengeBoy makes some very good points. I hadn't noticed that you're a girl 'till after I posted. It matters only to the extent that at your height and presumed reach, a 26' wheel bike may suit you better than larger wheels, it's in the geometry.
As pointed out though, the Novara is beefy and overkill it might be. Pounds and wheel weight take on a new meaning after five or so miles. The brands I'd stated should be looked at if not seriously considered or available just to compare. A 47cm or perhaps bigger may be of interest. H/D bikes are favored by some tourers but traditionally lighter bikes are favored. Surly and Bianchi should be considered and at least viewed on their sites. Again, not all these brands are sold everywhere.