I googled avocado wood uses and one hit showed pictures of table tops. I found some Douglas maple, normally a scrub bush, that were large enough to make small boards from but they will not stay flat. However, they make beautiful spindles on the lathe that are very stable for some reason. Unless you give it a try you'll never know.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.