First thing is not to get in a hurry to get it together. Take your time and do research and gather info for build specs...tons of info on here and other places.
First thing I recommend is ditch the HV oil pump its not needed. Basics......Run a standard oil pump and port the front cover and set up the end play on the gears to around .002.
Pick a ET and build around that. Good policy that a wise old fart...ummmm..... Grumpy says...LOL
Pick 2 from below
Fast
Cheap
Reliable
Ported factory Iron heads can get in the tens with ease.
Stock crank, two center caps, stock rods and forged pistons works well and will last and can cut off some cash vs forged and theres obvious strength losses with tah choice. Key to any build forged or not is the tune and avoid detonation.
Really need a et goal to really get detailed assistance