Jacaranda is a very difficult tree to use for bonsai due to the compound leaves, and weak leggy growth. They are the last tree to bud out in the spring, and the first tree to drop leaves in the fall, with no fall color. However for about two weeks of the year they are the most beautiful thing in your garden.
If you like the foliage of a jacaranda, I would consider Brazilian rain tree. If you like the blooms, I would consider wisteria (though also a challenging tree). I'm just not a fan of jacaranda because the "window of beauty" is so narrow. Compare, for example, to a Japanese maple, where you get four seasons of beauty. So many other trees where the return on your time investment is much higher.