I have very good experience travelling to nepal via delhi with my family. Customer was good..they treated us very good..iwas travelling with my greencard, they asked me if i had visa for india and i showed my greencard..they were very happy to help me...even airport staffs i found better than nepal airport in terms of service need for any information or help... you can carry one each piece..electronic item..no prolblem its legally allowed..they wont say anyhings on this...if you are pubeli than that will be even great.... you can fly delhi to bagdugra..and call your family at bagdugra airport which is 15 min...from bhadrapur,jhapa...... and if you can manage one day to visit delhi city.....

good luck