I too use Vallejo Model Colour 70818 Red Leather for BR bauxite (it's 136 on the display rack).
Some may argue that it's a little too 'orange' out of the bottle, but over a black primer it darkens down some what, and weathering grime also darkens it some more.
Vallejo paints are readily available online.
I'm not trying to shut the world down, as you say, I'm merely using the government's own words.
I'm sorry that you seem to feel that this is some form of personal attack on yourself, and the publishing industry, that was certainly not my intention.
Content or distribution won't be the problem, printing will be.
I very much doubt printing hobby magazines will be classed as essential work, and certainly can't be done from home.
Depends how much you thin it, how many coats you apply, how big the locos and coaches, etc, etc.
There are too many unknown variables to such a question.
It will also go further if you airbrush it, rather than hand brush it.
Interestingly, during my usual Sunday afternoon session at the workbench, presenter David Mellor declared an interest in railways, and played a number of railway inspired/themed classical pieces.
Railtec do a couple of internal user wagon sheets in 4mm, they may produce them in 7mm too if requested.
https://www.railtec-models.com/showitem.php?id=1799
Ah yes, transfer of oils in the skin can cause issues.
I make it a rule that once washed and degreased, I never handle a model without gloves until painting is complete.
Packs of nitrile gloves can be bought quite cheaply, and I find that I can reuse them many times before they eventually split.
Personally, I prefer the wheel cleaner sold by Minitrix, Arnold, Noch, Gaugemaster, etc...
https://www.gaugemasterretail.com/magento/gaugemaster-gm59.html
Is it possible you over thinned it the first time?
Try misting over a very light coat first, wait for this to flash off, then build the coat up steadily using multiple light passes.
You could unplug the Express base unit from the 0 Gauge, and plug it into the 00 shunting plank, and vice-versa, as needed. Spare plugs are readily available.
I regularly move my Prodigy base unit between 3 layouts, depending on which one I'm using at the time.
I generally use brass strip these days.
I have in the past, softened styrene strip with MEK and bent this to shape. I found this to be handy on a plastic kit, but too fragile for regular handling.