Champaran HumSafar Express : इन अजनबी सी राहों में, जो तू मेरा हमसफ़र हो जाये, बीत जाए पल भर में ये वक़्त, और हसीन सफ़र हो जाये. - Piyush Singh

U can raise the query in same window, so that anyone can get into stream of discussion and reply according to the Train & WL Scenario been discussed!!
Before 3 Hr of Schedule Departure from SBC, Chart will be prepared for the train & you get to know about berth confirmation (Dont have to pain urself to report @ Station to get updated)!! Use PNR online for Validation & Information!!
To be on safe side, other vacant option can be booked, as been suggested (if not 1AC, even 3A in some other...
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overnight journey train)
As far as lil puppy been considered, in case u dont get cleared in Rajdhani, u can accommodate it in other 1A/3A (Once in normal 3A, i found a gal travelling with big dog & when TTE enquired, she discussed some rule like, lady travelling alone can accompany along with pet - Lame excuse, but worked for her, as TTE got either clueless or found better not to indulge any heated conversation with confident woman)
Still, decision is on you, as by rule, u cant accompany ur pet except in 1A...