You haven't mentioned your rank but 85 percentile in Jee Main means your rank would be around 1m30 lakhs to 1.50 lakhs. Now there are certain criteria or factors that affect a rank. And GFTIs' seats almost get filled within 50000 to 70000 rank. You didn't mention your category rank too. So based on your rank it would be difficult to get any GFTIs. However you can try for J.K. Institute of Applied Physics & Technology, University of Allahabad, as it's your home state quota and the cutoffs for homw state quota candidates are quite low. I would suggest you to use our Jee Main College Predictor tool to get the best college based on your rank and percentile http://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer
You can check the cutoffs of GFTIs here http://engineering.careers360.com/articles/jee-main-cutoff-for-top-gftis

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