UngeheuerLich
Legend
I agree. I think taking the two attacks is better than booming blade in the case. Not sure what your trying to say in the last paragraph though.
My character is an arcane trickster rogue college of sword bard. Due to multiclassing rules my character has a few more spells known. He als is a level 5 spellcaster but only has access to level 2 bard spells (rogue3/bard4).
My character plays well. He uses a rapier one handed. He also mixes attack actions and cantrips.
I sometimes wish I would have been a swashbuckler rogue. I would lose level 3 spell slots right now but I would be a better two weapon fighter having two chances to apply sneak attack and blade flourish and go into and out of a fight without using my bonus action and not worry about my allies' positioning. Sometimes I am happy to be a slightly better spellcaster and access to booming blade.
It evens out in my opinion.
I had chosen the path of the arcane trickster at level 5, before I even knew I would be college of sword bard instead of college of lore which I was planning to be.
So what I wanted to tell you. Just play the character. Both options are equally valid. And maybe don't even set your plan in stone. The campaign might have you throw concepts over board anyway... you might end up warlock or sorcerer or fighter. You might end up as single classed rogue assassin.