Staining burls

A simple question.
But one that I think may be quite involved.
I brought some Tasmania Myrtle burl from the wood show just the weekend gone.
And have started playing turning with them.
They are very dry and sand and polish extremely well.
I did a little test piece today witch I sanded up to grit 2500 then ubeaut sanding cream.
Then ubeaut friction polish they came up looking amazing.
A loverly chocolate brown
But back to my question can burl be stained .
Being that they are extremely dry I wonder if the stain will penetrate or just sit on top off the survace.
I would be looking at dark rich red of some sort.
And if it's possible what grit level do I sand to before applying the stain.
My understanding is stain will highlight any sanding scratches so am I right in thinking I should go all the way to 2500 then stain then straight to Polish! (Will the stain raise the grain)
Also just a note I've never really played that much with staining so this will be new to me.
Any advice greatly welcome.
Also note number 2 the intended piece is a little turned vessel about 200mm diameter 200mm high so not a huge job.
With a wall thickness of about 7 mm
But the client is very important(wife)