Hello, my little feedback is as follows.
The Ginkgo are undoubtedly among the most resistant trees (no diseases, insensitive to insects ...), a little internet research on the Ginkgo which survived Hiroshima is interesting, on the other hand they often have a somewhat crude appearance, atypical which pleases or not ...
I like this aspect a little "primitive".
The branching develop very slowly, the cut wounds remain visible for a very long time, it is better to avoid them on the front side if they are too large.
They are simple trees to maintain, but you should not expect major changes in their structure over the years, such as with a maple or a juniper for example, so the ideal in my opinion is to find a tree that you like when buying with already a good diameter of the trunk, high enough because the leaves will remain rather large, and a lot of branches, unless you are very, very, very patient!