Congratulations. It's a cool feeling isn't it?

That's odd that you need the needle 3-4 turns out on that engine. Usually 2 is typical and can be tweaked slightly from there. If that's what it wants though then that's what it wants. I wouldn't call the engine broken in after 1 tank. The OS's are good and don't require a lot of complicate break in but it will get even better over the next few flights and probably require a little more mixture adjustment after that.

It sounds like you have a knack for flying but don't get too confident right off the bat. I don't mean that to be discouraging or negative in any way. It's just that you will have some bad days flying and learning doesn't happen overnight. A lot of us have had a great experience the first couple trips to the field only to have the plane teach us a lesson the next time out. If and when that happens, don't get discouraged. Just analyze the problem, decide how to avoid it next time and keep at it. The simulator is great tool for learning basics and not to over-control the plane. The goal is to learn to fly the real thing though, not master a simulator. I only say that because I see to many people who get overconfident on a simulator and put their actual plane into the ground.

You know what is going to happen now don't you? You will rationalize a way to buy every plane and engine you see. There will be a garage full before you know it just like the rest of us addicts.