Is it wrong to do this ?? 2 girls

I have 2 extra rooms available that I was going to do a nursery/toddler (2yo) and the other room would be a play area so all the toys stay in one place and easy to clean up but now I’m having second thoughts... is it too much “responsibility” for my two year old to have her baby sister in her room with her ? Like if my newborn (due in 5 days) wakes up at night and my toddler can’t sleep properly... should I just make them their own rooms ?

I planned on having newborn sleep in my bedroom till about 6 months old in her crib and only put her in the room when she’s fully sleeping through the night just like I did with my toddler... by that time my daughter would be 2.5