I think you can do a lot better for the money. £350 is at the very least £100 too steep for this and honestly doesn't seem like a big enough upgrade from the Aria.
This is also a time where basses were "less handmade" than older vintage guitars, but used more modern maching. Current modern basses are more precisise in my experience as the modern machining tech has improved.
A higher end Squier classic vibe series used would be within your budget and better. You could even buy it from a store with a free setup. Made in Mexico Fenders have also massively improved the past 10 years so if you can stretch your budget out to one of those too, it would be a decent upgrade. My experience with older Mexico Fenders was very, very meh or miss. The newer ones can be very good. A newer year used player series Fender P bass would be good if you can budget it.