duartix

This is a pyracantha I bought this weekend.
I've trunk choped about 60% of the tree. The remaining trunk has some movement, but it needs much more taper.

My goal now is to maximize growth within the following 2 or 3 years.
The roots situation is as follows: if you lift the tree of it's container (20L vase), you can see those thin roots all around the pot, but around 60-80% of what you see is soil.

I've got 2 options:

1 - Don't touch the roots. I expect the tree to throw a lot of new growth, since it has far too many roots now... Is this right?
If I take this road, I'll probably have to repot next spring.

2 - Prune the roots preparing nebari development which I don't know if it's there (I know I should have already checked for nebari but the soil is very dense and I haven't had the oportunity), put the tree in a coarser and faster draining mix to allow for root growth, and let it rest for 2-3 years.

Which of these options will give me taper in less time?

Thanks.

Attached Images

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