Damn, that kinda sucks. I wanted to roleplay as my main character instead of leaving the dialogue to others. Charisma Barb here we go, I guess.
I can't tell how familiar you are with this edition of D&D, but I think people should be warned of a couple of things:
- Multiclassing in 5e is more often than not absolutely detrimental to a character and outside of few "broken" combos that synergize well, there are good chances you are going to gimp yourself by using it. I'm not the most expert on meta-combos, but "Bard-barbarian at first glance sounds awful.
- It's basically impossible to get a single class character wrong. As long as you don't purposefully gimp their main attribute, pretty much any 1-to-12 single class will always be competent.
- NO ONE should get into this game with the impression that having a charisma-focused class is what's necessary to get a whole bunch of custom dialogue options. The game throws at you a boatload of dialogue options specific for many races and classes, even if they aren't supposed to the charismatic one