I read through your trip plan. I see you're going through my home town - Wałbrzych. Not much to see there, but castle Ksiaz is really nice. Worth a walk around. City wise, IMO Wroclaw is much nicer than Poznan Hmm, in Norway. If you are not planing on sticking to main roads, dont plan distances longer than 500km per day. Top speed limit is 100km/h, on most roads 70. So think average traveling speed of 60km/h. And you really don't want Norwegian police catching you speeding. The tickets are monstrous.