That's actually a pretty basic bracket engine. I did the same thing. Start somewhere, an engine just happens to be a great start to build a car around.
I was going to run 4.56 gears in mine but it turned out a 4.10 ended up being just fine after knowing exactly what my engine is capable of on the Dyno.
Now knowing that, I know what the ideal converter is, I know what weight I can build my car to and be at my desired E.T.
I knew what I had to do to build my transmission to last, I knew what wasn't going to work also.
I asked many people what gears I should run & most were wrong saying 4.56...dyno numbers say so.