Reference of your interpretation?
Ayah says that if you can't treat orphan girl in your custody, justly, if you marry her (as that gaurdian at that time by marrying her, instead of giving her dowry etc. would take her things, property too) , then instead of marrying that orphan girl you should go for other women you like from 2 to 4, and incase you can't treat multiple women justly then go for only one.
This ayah encourages to marry other women instead of orphan girls in your custody, if you can't treat them and take care of their rights justly.
This cannot be undone and I am sure it will be greatly appreciated.