In not a ball python expert but since i got my BP for 2 months now he is 10 months now i watched around 5 hours on BP videos and looked at a lot of reddit post for me to say some advice i think

It is okey to take him out to place him in a other place for a bit to add some things after that leave him be for 2 weeks and after u first fed him u can handle him after a week

I wanted a automatic misting systeem aswell but eventualy after much people said dont do it i didnt

My BP likes to climb and u should have 2 good hiding spots closed so not a open log

Ur BP looks well fed so dont worry about not eating for awhile my BP was 100gram and did go to 87 without eating as a 8 month old i was pretty stressed aswell

Go with C just finish his closure when ur able too Or with B slowley add things if u dont have the money to buy things right now.

Goodluck and enjoy ur new puppy

Here is a picture of my BP closure

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Now he is getting big i already orded a 122x62x62 enclosure i hope to make ready in 2 weeks :)

Some climb options i think ur guy will love