This team seems competitive, but I would worry about the power from your OF. This shouldn't be too hard to fix since the OFers on the waiver should be decent in a shallow league. I'd actually drop both of your postion players and pick-up sleepers or some power bats. Matsui is definitely not ownable in a 12 teamer.
You have a great top 4 SPs with some nice sleeper picks. Your pitching doesn't need to change at all really.
...Boston papers now and then suffer a sharp flurry of arithmetic on this score; indeed, for Williams to have distributed all his hits so they did nobody else any good would constitute a feat of placement unparalleled in the annals of selfishness. -Updike