Hello,
Birfs, knuckles, rotors, seals, bearings... Welcome to the club.
OEM birfs are good enough and well worth the price. So are rotors and knuckles. Ask me how I know.
You may want to replace all the studs.
You are in the neighborhood already. Take the chance and get manual hubs. The 1FZ-F engine is powerful but thirsty, and manual hubs will help a little with fuel consumption.
Last but not least, H150F's first gear is rather short, although not as much as in the H55F. H151F's first gear is a tad longer. It takes time to get used to it, and its feedback click is louder when cold. Remember, gears in the H15x transmissions have a feedback click that may be annoying at first.
Juan