Me personally, I wouldn't do the KVR on a road bike. It's totally flat but a gravel path. Put if you don't mind gravel, go for it.

I LOVE riding in the Oliver, Osoyoos area. Lots of wineries to visit. Beautiful scenery. Highway or back roads. So good climbs. You can do the IMC route too.

There are some flattish areas but the Okanagan is mostly hilly to almost mountainous.

Let me know if you have more specific questions.