In all seriousness, you've got it about right, Brian.
With that detailed approach, you'll be fine.
> Hours of mindless fun and the thrill of never quite knowing whether this particular can of Big Soup was indeed touched by a shelf-stacker who now has the lurgy.
Virus survival time can be short or long. Stack them dry, and not too cold, and leave them for several days:
https://www.medicalnewstoday.com/articles/coronaviruses-how-long-can-they-survive-on-surfaces#How-to-inactivate-coronavirus(I'm sure there's other research out there too, if anyone knows of it.)
<grandma-sucking-eggs-mode>
To anyone who thinks it's a bit overkill, and you'll be alright, don't under-estimate the horror of exponential growth.
It's not necessarily going to kill you, but by being slack and passing it on, you will kill others down the line, take up beds, and generally put your own life in danger should you need the NHS for some other reason.
Here's a example of 20% growth, day by day, if no action is taken, up to 1st May:
(20% means 1 in 5 infected people pass it on to 2 others, rather than just 1, which about the rate we were running at last week)
Which is why the UK Gov & others have jumped.
Self-isolation will nip this in the bud, so it should start to level off in 14 days or so - the incubation period (if people adhere to it).
Then the decision to make is how much (or little) do you ease off the restrictions, so that enough beds will be free for those still catching it.
Day Infections Date
1 1,391 16-Mar
2 1,669 17-Mar
3 2,003 18-Mar
4 2,404 19-Mar
5 2,884 20-Mar
6 3,461 21-Mar
7 4,154 22-Mar
8 4,984 23-Mar
9 5,981 24-Mar
10 7,177 25-Mar
11 8,613 26-Mar
12 10,335 27-Mar
13 12,402 28-Mar
14 14,883 29-Mar
------- growth should start to level off here, but if not....
15 17,859 30-Mar
16 21,431 31-Mar
17 25,717 01-Apr
18 30,861 02-Apr
19 37,033 03-Apr
20 44,440 04-Apr
21 53,328 05-Apr
22 63,993 06-Apr
23 76,792 07-Apr
24 92,150 08-Apr
25 110,580 09-Apr
26 132,696 10-Apr
27 159,235 11-Apr
28 191,082 12-Apr
29 229,299 13-Apr
30 275,159 14-Apr
31 330,190 15-Apr
32 396,229 16-Apr
33 475,474 17-Apr
34 570,569 18-Apr
35 684,683 19-Apr
36 821,620 20-Apr
37 985,943 21-Apr
38 1,183,132 22-Apr
39 1,419,759 23-Apr
40 1,703,710 24-Apr
41 2,044,452 25-Apr
42 2,453,343 26-Apr
43 2,944,011 27-Apr
44 3,532,813 28-Apr
45 4,239,376 29-Apr
46 5,087,251 30-Apr
47 6,104,702 01-May
</grandma-dead-no-sucking-eggs-mode-required>