Although I do not use Rogues myself, I support the idea of using a Thief as part lockpicker (DEX) and face (CHA). Take 15 CHA at character creation, as quite early on you will find a ring boosting lockpicking at cost of -1 to CHA. And you want abilities to be at even numbers.
Another simple and easy to master Class is Fighter Champion.
Larian changed DnD rules so races do not really matter.
