Another 318 build, and questions. (LONG)

That cam should work well, I think if you degree the cam to have more down low you will lose top end power which is where the 318 comes to life. with some converter I don't think you won't need any more downstairs. I also think a stock oil pump would suffice. You don't need MLS head gaskets, it would be a huge waste of money on this motor, stock felpro will do the job fine. I'm not a big fan of stock iron 4 barrel manifolds. Some do work okay but you could get a lighter aluminum one that performs better.