Oh and if you don't take astarion in your party, anyone with decent dex can handle traps and locks for you. It's easier if they have thieve's tools proficiency, but not necessary. Most warlock or wizard builds will want to pump dex to 14 or 16 if they can get it, so you could forego Astarion in favor of Lae'zel and still be able to handle traps/locks.
