Off course, you will live anywhere in india,but you will recognise as maharashtrian. No problem if you have 10th or 12th marksheet out of Maharashtra.you will definitely comes under 85%quota of Maharasthra.

NO
old domicile rules come back from this year again ,
Required two from three 
1) 10 th in Maharashtra
2) 12 th in Maharashtra
3) Maharashtra domicile
Wait till the Dmer release neet broucher 2018 in next week ,may come some positive for you

Of course  you will apply for it dont worry