[mepstein]

Lots of first timers have built an engine. The advantage you have is you can take it step by step, take as long as you need and ask as many questions as you want. You can also sub out parts that you feel are above your head but still oversee the main project.
First thing to do is pull the engine, clean it, tear it down and clean the individual parts. You can work with your machine shop and get help with measurements. Taken one step at the time, anything is possible.
Watch a couple good youtube videos to get the overall gist of the teardown and build. Buy tools as you need them and enjoy the process.

Neil said it way better a couple minutes earlier. Listen to him.