See....We are here for predicting a waiting ticket...and from our expeience me and 26 other members (see the prediction list) have hit Confirm button. As far as the history of this train , waiting tickets get confirmed easily bcoz huge amount of tatkal and other quotas for end to end journey remain vacant as majority people prefer the other 12951/53 BCT Rajdhani for travelling Delhi to Mumbai. Thats why 12953/54 Ak rajdhani remains somehow less congested for Mumbai to Delhi tickets, so further which these tickets are released to clear the intermediate waiting tickets like your have one.
Here we can just suggest to you, Final decision is with you only sir. Its your call to Cancel the Ticket.
Thanks.