Buying a mini excavator and doing it yourself vs. paying for garden landscaping

That is already appropriate if

- the 8m mound has already been distributed before
- the topsoil and most of the gravel have already been installed before
- all modeling work has already been completed before
- the L-stones are only 60cm high, or have already been set

This size is used for excavating small foundations, laying small trenches or pipelines, fine grading, ...
Look, your mound is 4 times as high as the little excavator...

But if the prerequisites are met, he can also rent an excavator for a few days ;)

That is even smaller than what I had in mind with toys. We call that a "motorized shovel".

So the Beetbrüder also build entire garden landscapes with it in a week.