hi surya,
do you know for sure if there is management quota in st. john's medical college?
see this link from its official site- http://stjohnsadmissions.in/html/mbbs_selection_process.html
this is how the distribution is and there is no mention of management quota.
https://www.careers360.com/question-what-will-be-the-cut-off-marks-for-neet-2018-for-st-johns-medical-college-bangalore-for-obc-category-according-to-state-list
also you can check kritika tyagi's reply for further idea.
Hi Surya
This year it is bit tough to get a seat even under management quota with 450 because this time NEET was very high scoring. Your score is good but this time it will be a bit tough and St. John is a pretty good medical college and some seats are reserved for Cristian minority too.
All the best
Thank you
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