Turning Chinese Pepper (Zanthoxylum) from nursery stock to a bonsai

[lavaki]

Hey guys!

I'm new to bonsai and I'm looking for advice on the initial pruning of the Chinese Pepper tree (bush?) that I got a local garden center.

The style I'd be going for would be something like this (not sure how to properly call it):



Here's the original photo of the raw material that I have.



And my initial ideas (cut back to either yellow or red line), clean up the bottom to show the trunks a bit.



I'm also not sure if it's too much for a tree to handle if I go for hard pruning of both the branches, the roots and do a repot at the same time. If it is too much indeed, then what should be the best order?

 

[Laddo]

I'm no expert, but heavy pruning and repotting at the same time can be risky depending on the species. I'm not familiar with this particular tree.. Looks pretty cool though and i think you can definitely style something along the lines of your inspiration pic