IMHO (which will probably in the minority here on TB) is your instrument will not 'really' get any louder, but using a brighter string will bring out more 'top end' and seem more present in the room.
It's hard to suggest string sets not knowing you or what sound you're looking for—check out some of the other LaBella tape 'flavors' (gold, copper, white) they are brighter than the blacks but have same feel and probably a closer pickup response to what you have now.
**If trying 1/4 DB sets, check that the combined tension weight of the set against the Labellas you're currently using. There are many ABG like your ARIA are just not designed to take more weight and will sound more 'choked' than loud. Playing a lighter/brighter string will help the presence, but will most likely change the pickup response—but that can be adjusted at the amp.
I've been looking at 1/4size DB for myself but disappointed in trying to find lighter tension sets. IIRC 1/4 DB Preludes are one of the few available sets, and surprisingly heavy (±58lbs/string) as a set. Ive been keen to try the 34-5" NS OMNI Bass/cello sets (but the price is too much for me as an experiment).
@GretschWretch have you found any lighter (tension) 1/4DB sets? love to get some brand options