Civil in iiiest shibpur is going to be a better choice as iiest has its own brand value while other institutes you have mentioned are nits but they are somewhat lower nits and do not have the same status that the other older nits carry on the other hand iiest shibpur s quite old and attracts brilliant minds from all over india also civil is not a very bad branch as people often think it to be so there no problem taking that also option of branch change is always there at your disposal