I forgot to respond to this point about olive trees being expensive. Mine was free! A friend gave it to me many years ago because she thought it needed to be in a greenhouse. It was taking up too much space after a couple of years and so I planted it outdoors in the garden. It hasn't looked back and keeps reaching for the sky. Our escapologist cat used to tut at my husband whenever he pruned the tree to keep the kitties from using it as a bridge to the outside world.
What's even better than home grown olive wood? Single varietal smoking apple wood chips, that's what! I had a good giggle, thinking about labelling up bags of apple chips with the name of the variety, the tree's pet name and selling them at a premium to people with more money than sense.