Hi, 

First of all congratulation for your this amazing rank.

So come to the point, If you are not sure about the JEE advanced then just leave that. Now as you have two choice 1) 57 rank in comedk so through this you will get top colleges like RV, bangalore. It is one of the top moost prestigious college in India. 2)10k rank in JEE mains so through this you will get top Govt. college of India like NIT and all. So now it's all depends on you like what exactly you want, TOP ranked Private college or TOP ranked Govt. college. If you wanna get into a private college than go for comedk but fees will be little high as compared to Govt. college. So select wisely.

Hope this helps

Thank you