Option 1 not viable (AFAIK), You'll have to take UR ticket till Muri only if you want to travel in JS. TTE (if he finds out, which has high probability, as mostly tickets are checked by the time train crosses Silli) won't make EFT for station which train does not touch (in your case PRR). Bribing an option here to let you travel till Muri (Which I guess will mostly work), but may cost you more than the ticket.