To be "integrally developed" does not mean that you have to excel in all the known intelligences, or that all of your lines have to be at level 3. But it does mean that you develop a very good sense of what your own psychograph is actually like, so that with a much more Integral self-image you can plan your future development.
Integral Spirituality: A Startling New Role for Religion in the Modern and Postmodern World (ed. Shambhala Publications, 2007) - ISBN: 9780834822443