TVC departure at 0630 means conflict with Venad, Parasuram, Raptisagar, that whole slot is just jam packed with fast passenger like trains. Instead of aiming for SF, SC should just extend it to NED via MUE - NZB or BIDAR via VKB. Basically, a station with PM facilities or just continue RSA arrangements with 4 dedicated rakes for this train. At this point, I don't see SR budging even a bit. If only trains ran faster in Kerala without being fast passengers, we wouldn't have had this issue. Best bet would be an evening departure from TVC for faster schedule in Kerala or departing behind Kerala SF. Even then, there is a risk of getting caught up in the huge line up of Night time SF that will simply overtake Sabari, and PM at SC will become an issue, rescheduling, many know how that is going to work out.