Two are better than one

Harry is sent to the Dursley. However this time he's not alone. joining him is his twin sister called Rose. Together they plan to give Dumbledore and Voldemort a real headache. Pairing Harry/Daphne/Astoria/? Rose will be paired with an Oc, I plan to give Daphne another sibling this time a twin brother. Smart Harry/Powerful/multi-house/ Weasley bashing, power-hungry Dumbledore