Beautiful Don.
Maybe tighter and rotated clockwise about 10 degrees?

I just realised I made a BOO BOO
The top image by Topaz had already had my default colour noise removal in the Raw processor.
Here it is with JUST Topaz. It's even worse, with a bad band under the window after Topaz second-guessed the texture, and smudgy noise created in the shadows.
This is 'Raw strongest with debanding' and custom colour setting to give it some help. It was also very slow. taking at least 30 seconds on my new Mac.

I'm a little biased towards film-like grain. I tend to remove colour noise but leave a little texture behind (and detail).
The K5 actually produces nice fine grain, which can add to the ambiance.
I'm looking forward to seeing Topaz experts' images before and after (if you can be bothered).
Remember this is as much about speed as anything. Clearly better results could be had if you are free to work on a file indefinitely.

Yes that's true, but it's the detail/noise balance that I am concerned with. Topaz has just smeared it and made everything look plastic. If it was a critical image I could apply local variations.
I haven't really given Topaz (free trial) a fair shot at this, but looking at my own test of the way I work with event photography (i.e. minimum editing), LR is more than capable of cleaning up an image in a batch process without turning it to mush.

Quick and dirty test for Web-sized images. Nothing scientific, but with no effort and a considerable advantage in speed, LR clearly beats Topaz in this test. Batch processing is important for me too.
K5 stuggled to make enough noise to play with!
6400 ISO
Topaz:
'Stongest with debanding' (actually created banding under the window)
Resized to 800px, USM 50: 1: 0



Lightroom:
Luminosity:50
color:100,25,25
Resized to 800px, USM 50: 1: 0


No idea why there's a funnel in my bedroom

Remember Raw has a JPEG embedded in it anyway.
Hitting A forces Faststone to render the raw data (which will really make your machine chug I'm guessing Peter).
But my understanding is that Faststone only uses the basic, default converter to do the work. Nothing fancy, but it might show some more detail.

OP, have you seen this complete kit for sale?
https://www.pentaxuser.com/forum/topic/fs--pentax-k-x-setup-48369

K-x every time with a kit lens and a bunch of manual lenses to play with. Still under £200 total.
The lack of focus lights is only a miner nuisance if you're used to better stuff.
I sold mine but couldn't resist buying another a bit later! Easily holds it's own against the K5 for every-day photography.

Haven't read all this, but Eneloops! ace.. get the coloured ones. Different colours to keep track

Very nice mix of ambient and flash. Beautiful.
Cheating with those two subjects tho'
Professionals sometimes unfairly deride the umbrella (all fill - no skill etc), but you've been very subtle with it.
It's a versatile piece of kit - I keep one, with a cheap Yongnuo in my walk around camera bag! Great for macro and fill flash on location.