I will be playing a new campaign in a bit, which will have the characters start at Level 1, presumably going up to about 11 or 12 before it ends. I have only single-classed so far, but with Xanathar's Guide to Everything out, I have thought about making a Multiclass character, specifically a Rogue/Bard, using the Swashbuckler and College of Blades archetype respectively.
The general idea behind this is for him to be the main Damage Dealer for the group, who uses Flourishes, Bardic Inspirations, Fancy Footwork and Cunning Action to outmaneuver his opponents, all while telling elaborate Pirate Stories.
How viable would such a build be? I'm currently looking into starting off as a Bard, dipping into Rogue once I hit Level 5 (so I get better Bardic Inspiration), then going straight to Level 3 as a Rogue to get Cunning Action and Fancy Footwork, then back to Bard again for the last few levels. Naturally, I'd go for a high Dexterity and Charisma to get the best of both worlds.
Is such a build viable or would I pull down my group simply for my love of Swashbuckling talltales?