Too small. As other mentioned, conures are extremely active. I got an inhouse aviary (or a huge cage, depends how you see) for a good price in Hungary. It is available in Germany as well (from a store called Fressnapf). It is 185 cm tall, 120cm wide and 80cm deep I think. It's a huuuuge thing. It is made as an aviary for small birds like budgies as the bar spacing is only 1cm, but Pascal is tiny conure so it's perfect for him. I can tell you, he is using the whooole thing. When he is closed, he can easily fly from one side to another.
Another thing to see when buying cages is to see if you can rather buy wider than taller. Such cages you can put on a stand with shelves or something.
If you're located in Europe I could help you further in finding a more suitable cage.