First Engine Build - Advice Needed

Sounds like you have a plan, I applaud you for wanting to learn and build yourself. we have to start somewhere and 99% of the work is in machine work.
assembly is easy. If you can read and properly use tools that's the other 1 %. I built my first engine when I was 14 and it was a 383. I share bits and pieces of my 67 Fastback build which started at age 15 when I needed a body to stick the 383 and 727 in. 40 years later I still have the 67.
good luck, I hope you can find an honest machine shop.