QT advice for the same room >

Disposable water dishes and substrate, to be immediately put outside after use, no cross contamination (I.E no handling the QT animal and then anything from the established collection without a shower and change of clothes), keeping handling of the QT animal to the minimal until it clears at least a 90 day qt period. I don't use feeding tongs, so separate feeding days.

Anything else I should do besides these things ?

Do you have a friend with no other herps who wouldn't mind taking care of it at their place for 90 days?

I do not. I will probably be able to swing another room in the basement for 3 months, and then keep them on the other side of the room for another 3 months. I realize how important quarantine process are and will implement them as best as I can with the space I have.

I QT in my closet lol

This would be my worst case option, I could move my rack to the other side of the room and put the new animals tub in the closet.