That sounds way too elaborate.Since I burn 24/7 I had to come up with a plan for ash removal without taking the stove all the way down.
Here is what I do.
Once the majority of the larger coals have burned down and the stovepipe temp is around 150F, I start stiring the ashes every half hour or so. I might do this 4 or 5 times until the stove is around 100F.
Then I take a small sheet of stainless steel mesh and while wearing my welders glove I push the mesh along the bottom of the firebox like a shovel. The light ash flows through the screen while the larger coal fragments are carried on the top of the screen to the back of the stove. I then drag the ash under the screen toward the front of the stove.
At that point I could probably open the ash dump cover but instead I shovel it into and ash bucket and take it outside.
Someday I will cut the mesh sheet to a smaller size, weld some flats on the edges to make it a little more rigid, and put it on a handle. Once I have the mesh on a handle I could work on an even hotter stove.
MnDave
In the morning, empty ashes. Whether the stove is 150 or 450. Insert shovel, shake off coals, dump in bucket. Repeat.
It takes about a minute or two.