How about the intake manifold gaskets? Did you put new ones there? Those, especially in cold weather and high atmospheric humidity, do this kind of trouble, misfiring and bad idle mostly on cold engine. I had that problem back in the day, saw on this forum that I'm not the only one, lots of colleagues had it and no one came with a proper fix although some of them replaced about everything on the electric side.
Here is a topic about it, with my post after realizing that is the fix for bad idle on cold engine. So you might have those in sight if you didn't recently put new gaskets on. If those gaskets are worn out, the combustion chambers aren't properly sealed and atmospheric humidity gets in.
But, as I've mentioned before, by the pics from inside the cylinders, you also need to put new valve stems seals. The pressure on the higher end on the compression test is an indicator of worn out seals. Also, there are more signs that tell you the valve seals are leaking, and you seem to be able to check most of them for being present. These are: increased smoke level, more oil consumption, bad engine idle, bad acceleration power, engine misfiring. Also, on the spark plugs inspection, you can see carbon deposits on the spark plug electrodes and oil traces on the spark plugs threads.
How bad is the oil consumption on yours?
