I treated my factory gears and that's it. You have the everything you need, balance that pig and put it together.......
Edit: Remember your not going to be spinning 8500 to 9000 rpm and your not shooting for 1000hp so you really have all the major components needed. You have to draw a line on what your goals are and what you need or building a motor will get 2x more expensive than it needs to be..... IMHO your rockers, oil pump will be more than enough to do what you want to do.. Just my 2 cents brother