I hope you didn't take the dual wielder feat, it's +1 damage per swing, +1 ac... or in other words rubbish versus +2 dex which does both of those and +1 to hit on top.
As for bows, the loading feature is primarily what separates crossbows with the other bows - and the loading property only matters with 2 or more attacks. So for a Rogue, a light crossbow is the same as a longbow, meaning yeah get the +1 light crossbow.
