goowthami express has a HA1 coach. it comprises of 2 cabins ( for 4 persons each) and 1 coupe ( for 2 persons)
the allottment of cabin/coupe is done during charting.
as u r a couple registered on same pnr, the chances of you getting a coupe is much more. still if you want a coupe, you can book at prs and request the prs clerk to exercise the option of coupe while booking. if booking at irctc, you can request for a coupe in writing to CCM, Zonal Head Quarters. availability of...
more... seats has nothing to do with coupe/cabin as the status at charting is accounted for and 1a allottment is done manually.