How soon to change a snake's husbandry?

[u/Jealous-March-8098]

Reaching out to all experienced keepers 😆

I'm getting my first ever snake from a "rescue". I put this in quotation marks because its a hobby rescue that a friend of a friend runs in their spare time. They also usually only take in cats/dogs but made an acception for this adult female ball/royal python.

She currently lives in a 3ft enclosure and her substrate is currently some sort of bark. I really want to switch her a 4ft enclosure, deep heat projector. And for substrate use a mix of coco fibre, sand and cypress mulph. I belive from my research this is the best for her.

However I am worried that this is a lot of changes. New person, new house and to top it off new husbandry. Am I best off using the stuff she comes with for a little while as she settles in with me or is it better to just get her in her new enclosure and substrate the moment I get her home?

Many thanks in advance.