Kate but not Catherine

I am going to baptize my new daughter [name_f]Katie[/name_f] [name_f]Sara[/name_f] [name_f]Rose[/name_f]. Is [name_f]Katie[/name_f] too immature a name? I was thinking about expanding her name to the elegant [name_f]Katherine[/name_f] [name_f]Sara[/name_f] [name_f]Rose[/name_f]. Or perhaps the lovely Irish, [name_f]Caitria[/name_f] [name_f]Sara[/name_f] [name_f]Rose[/name_f]. Is the name [name_f]Katherine[/name_f] too heavy handed compared to [name_f]Katie[/name_f]/[name_f]Kate[/name_f]? Also [name_f]Katarina[/name_f], [name_f]Katrina[/name_f], and the musical like. Thanks.