9.2.2 should fly along beautifully on the 1.0 Ti... not entirely sure about Leopard's performance however. I know as much as it will run, however it may be a little painful as I don't beleive the Ti runs a hugely powerful graphics controller. It would help to turn off some of the UI graphics effects to speed it up a little. Bear in mind that leopard does not support Classic mode, so you must actually boot into OS9 entirely to use it.