Hi , jammu and kashmir has 100% state quota and as per the marks you have mentioned you have fair chances of getting a seat in government medical college under state quota as last year least marks to secure a seat from OM category under state quota was 476 in government medical college rajauri.
And in ASCOMS sidhra jammu was 489 .  You can present your ews certificate at the time of Counselling to avail it's benefits .
Remember cutoff varies every year depending on number of students appearing in exam, difficulty level of exam, students scoring more than you and your category.
To predict your rank according to your marks click here

To predict your college According to your marks click here
https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer
Hope this helps

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