Yoda,
I didn't realize this was a clone you had purchased rather then one you cloned yourself. It already has roots. No respectable dispensary would sell clones without roots.
You can plant it into whatever you are comfortable with. No need to match perfectly. No rush, but get your new pot ready with whatever you plan on using. Leave the rockwool in place...trying to remove will damage your plant.
So look at your pot you are going into and plan ahead. Fill it up enough so that when you put the clone and rootball in...top of old media will be about where you want it to be.
Sorry, never tried to describe this process.
Make sure your clone media is fairly dry when you remove it from cup. It'll stay together better...meaning no root damage.
OK, so now you have your clone in dry media. And new larger pot with some soil/media in the bottom. Just turn the clone cup upside down, one hand under to catch the rootball and give the bottom a little slap. The whole rootball should pop out into your hand.
Stick it in the new pot. Now all you need to do is fill in the sides gently. Water good and maybe before next watering, you may need to add a little more soil around perimeter because it compacts with watering.
Now here's a little freebie hint. An old grower like myself...BOG (Bushy Old Grower) wrote a book about his technique. When he transplanted...he overfilled the bottom just a bit so that the top of the rootball stuck up an inch or two. He claims this promoted aeration to roots. So once he was in the final pot...the soil looked like a wedding cake.
Please ask questions if I didn't make this clear.
Cheers,
JD