ah - I had mine done a while back on my Terminator engine. Big job.
The silly little seals behind the hydraulic cam chain adjusters had burst, and the adjusters would bleed down over night, so it would rattle when first started.
All new parts (probably overkill) made it perfect.
Some thoughts - make sure the cam chain adjusters are the newer GT500 style with the flat mating surface, and while all this stuff is off, you could replace the oil pump, but it isn't critical.
Are you going to do the chain guides at the same time?