Is My New Paph Venestum OK?

[Rowangreen]

This Paph arrived in the post looking a little squashed and slightly wobbly in it's pot. It's lost one leaf and two are definitely on the way out.

It's my first Paph though and I'm not sure how to assess it's health: I'm not sure if there's a bit of rot there, or it's just a couple of leaves dying off as new roots form. I'm also not sure if I've got healthy old roots and new ones.

Also not sure if I should be re-potting now, and what kind of medium if I do. I have seedling mix or sphagnum in. Anything else I'd have to find. The paph is currently in large chunks that look like hard nut shells (could be coconut, but seems smaller, harder nuts and less fibrous than I've seen before)

For the picture I pushed away a couple of bits of the medium. The new root is a little orange on the end, but I don't see a really distinct growing tip like you'd see on a phal.

To the left of it in the picture are two older, brown roots. It has at least a couple of others behind too. They seem firm and well into the pot, but I don't know if that's a good colour?

Thanks! I'm intending to feed back to the seller, so I'd like to know if I'm worried about nothing before I look an idiot!