three imaginary boys

off to paris in three days. 
very excited.  very nervous about the tasting.  i know it's going to be fun.
i have 1.5 days to myself in paris and versailles.  don't have any concrete plans.
want to visit Pierre Herme, Aoki, Hugo & Victor, Patisserie des Reves...
should i act the tourist and visit the catacombs? louvre?
any suggestions?
above are some mignardise:  Caramelia truffle, praline fudge, orange-bay leaf macaron