I used to have a DR650, and replaced it with a WR250R. The DR was by far the worst bike I ever owned, and one of the worst I have ever ridden; the WRR is a good bike, but it has limitations, the main one being its lack of power.
Going from the DR to the WRR, you will of course immediately notice that the grunt is missing, but it goes beyond that: on mountain roads the lack of power becomes dangerous when you try to overtake vehicles and suddenly hit the rev limiter. You can do the regular mods (exhaust, fuel programmer, open airbox) and things do improve, but it's still just a 250cc bike.
The rear shock is the next glaring problem: almost complete lack of rebound damping, a Gold Valve kit is desperately needed.
Although it is significantly lighter than the DR, this does not directly translate on how the bike feels because the WRR is a bit top heavy.
On the positive side, the bike is well balanced, and gives you confidence that it won't betray you at critical moments.
As a dirt bike it is too heavy, but if you're used to the DR, then the WRR is a vast improvement. It doesn't excel on the road either due to its lack of power. But as a lightweight adventure bike, it is in its element.
Rear suspension provides some height adjustment, and you can lower it by about 1". You can similarly raise the forks in the triple clamps by about 3/4" to even out the geometry.
I know you said that you're not willing to consider orange bikes due to their exorbitant price, but the KTM 690 is on a completely different level: more power than you will ever need, better balanced than the WRR, more confidence-inspiring. It is however about 2" taller than the WRR, and reliability is always a concern -- a big obstacle if you regularly travel solo. The seat height is not as big of a concern: I too have a 29" inseam but was comfortable on the 690 due to its excellent balance.
