Hello Md Ehtesham, basically it is first time when only EWS is introduced in JEE MAINS so there is no previous year rankings or cutoffs.

But it expected that upto 8000 someone can get lower NITs(NIT MIZORAM,NIT ANDHRA PRADESH,NIT PUDUCHERRY )o IIITs.(IIIT BHAGALPUR etc). 

you can also go for UIET CHANDIGARH OR PUNJAB UNIVERSITY.These are some of good govenment college which you may get at this rank.

AAL THE BEST