Going by last year's cutoffs, the cutoff score for Government Medical college Haldwani was 514 marks for Ews category and the respective all India rank was 41393. And for Government Doon Medical College Dehradun was 480 marks for EWS category and the respective all India rank was 61988 for state quota candidates. Now with 453 marks in Neet it would be quite difficult to get into any of these Medical colleges as there are high chances that the cutoffs this year may Increase. But keep in mind that these are based on last year's data and this year the cutoffs can change. To get complete list of all colleges you can get based on your rank use this link http://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer