Hi prateek purohit,

If you have confidence that you will be allotted better college then the first round allotted college then you can go with second round but few things you need to consider  wheather to freeze your first allotted college or not ,i suggest you to pay the fee and then participate in second round because in first round almost 70% seats will be filled so again in second round if you get bad college then your previous one then you can't go back for your first allotted seat if you didn't freeze your seat so i suggest you to pay for it and try for second round , so you will have 2 options

Hope this information is helpful

ALL THE BEST