03 should have toyota super long life coolant(pink) in it. If it does, it should be fine until 100K.
I think your 03 takes T4 trans fluid, so add a trans flush to your list. Also, throttle body cleaning would be good to remove carbon deposits. And new plugs, unless they are Irridiums(I think they are on the 4.7, but easy to pull one out and check it)