Not quite finished, but good enough for now. All that's left are some plugs, some fillets (trim under the railing), some trim on the board against the far wall, and the actual finishing.

We agreed the finishing can be done later, when it's too hot/rainy/whatever outside to work on my other things. The balusters look fine, but they're actually only primed. Everything will need to be patched, sanded and then painted or stained. The railing, shoe rail, and newels will all be stained to match the stairs. The balusters will be painted white.

There are some things I'd do differently if I did it again, but overall I'm pleased with the end result, especially as this is the only time I have ever done this work.

The balusters on the staircase were especially tricky as the holes for the dowels (I used metal double-ended screws made for installed balusters) were not centered on any of the balusters. That meant I had to make a jig to position each baluster and (using a dowel center) tap it down on the stairs to mark the hole center. It was tedious, but worked reasonably well.

For photos of the original stairs and balustrade, see this post.