The broad answer is yes, you can do that. However there are limits.
First, the entire range of numbers, 1xxxx would have to be clear of any assets.
If you assign a number as 102000 to an asset and an asset already uses that number,
the new asset will over write the existing asset.
Using your own kuid would help, but it would be a real pain picking numbers unless
you assign them sequentially.
As narrowgauge said above, use of the CCP would have to be avoided.
In the past I have uh... rearranged a few assigned numbers to force assets into
a narrow range. I gave it up as it requires a great deal of editing and a lot of extra time.
-AL