I had a similar quandary the other day, except didn't have a 3k nite.
i had a 2600 db/dc
400+ dt/h
115 candies and a couple of decent dratini's
i powered up the db/dc to max
for you, i would test the waters with the 93%, hoping to get a reasonable moveset - with at least one of the moves you don't have to change. (although TM's may be easier to come by than dratini candies)
second option would be to power up the sw/hb.
power up the 72% would be last, imo.