Im a newbie, I dont have s04, and i am going to buy s05. I was wondering which difficulty level I should play at if i want to play the game- i wont worry about the league for a few seasons. I would like to play on combined schedule, but which schedule is best for the league?

So5 isnt out yet so nobody can answer that question. I would start on normal if I was you when it's released

If you know a lot about horse racing then no easier than normal. If you don't, you're probably better starting on easy.
This is if the difficulty levels are the same in 5 as they are in 4.