Yes, your proposal is good but this train 13063/64 has good ticket availability even in peak Puja season also so if it runs till Kerala then it will be exhausted & Load on Tebhaga , BLGT SDAH will increase very much & they are not having 20 coaches also. So any extension of SER train may be possible if they feel that there is too much congestion in SRC, PDPK etc or a new train by SR may be the best option I think