buddy go for it....
i am gonna do the same...
and for legal thing you have more loops i guess if one of the family accepts that should be fine,
even if not, you may marry her but do not register the marriage. so, you can stay together (living in relation) legally as per the new laws.
here i am giving some examples for moral support
I will send you some info from Hindu ithihas also
Emma Darwin (née Wedgwood) (2 May 1808 – 7 October 1896) was the wife and first cousin of Charles Darwin, the English naturalist, scientist and author of On the Origin of Species. from WIkipedia Emma Darwin.
Einstein married Elsa Löwenthal (née Einstein) on 2 June 1919, after having had a relationship with her since 1912. She was his first cousin maternally and his second cousin paternally. In 1933, they emigrated to the United States. from Wikipedia Albert Einstein
In the Mahabharata, one of the two great Hindu Epics, Arjuna took as his fourth wife his first and cross cousin Subhadra, the sister of Krishna.
Subhadra and Arjuna's son was the tragic hero Abhimanyu. According to Andhra Pradesh oral tradition, Abhimanyu himself married his first cross-cousin Sasirekha, the daughter of Subhadra's brother Balarama.
It seems that the tradition and rules of Dwapara yuga have allowed cross cousins to marry as evident from Arjuna's marriage with Subhadra, Pradyumna's( Eldest son of SriKrishna) marriage with Rukmi's( Brother of Rukmini) daughter.
Also Srikrishna himself married to cross cousin "Mitravinda"( Daughter of Vasudeva's sister Rajadhi Devi who was Queen of Avanti) and "Bhadra" ( Daughter of Vasudava's sister ShrutaKeerti who was queen of Kekaya kingdom.)These stories are indication of influence of South-Indian kinship system on mythology. from Wikipedia Cousin Marriage