Cylinder Head Choice

I am a total newbie when it comes to working on cars, probably to the point where I didn’t know what to ask - but a parts list is absolutely what I am looking for. My understanding is that there’s a lot of compatibility issues and to ask questions, and after watching a lot of YouTube channels and reading a lot there’s a small amount I know — but I know it’s hardly enough. I appreciate all this advice a ton.

For what it’s worth, I’m not doing this to specifically get 10.5 as much as that’s a ballpark figure I would like to achieve. This is more about learning, enjoying and loving the car and experience. If the car runs faster than it did when I started working on it, I’m happy. If I make that time at the track, I’m ecstatic.
Just curious, why or how did you come to the 10.5 ET as a goal ? Did you ride in a friends car or own something that ran 10.5's, like a crotch rocket ?? The reason why I'm asking is 10.5's might sound like a cool number, but you'll need your 318 to not just beat a New Challenger R/T, or a Challenger Scat Pack, but you'll need to beat a stock Hellcat with a biting tire !!! That's some serious mustard, because you have a lot of ketching-up to do !!