Re: New guy in Illinois.
Welcome aboard. There's a handful of us Illinoisans (Illini?) on this forum. But I don't recognize Lawrence county.
As an intro post, you're not in the wrong spot at all. But for input on your particular build you might want to browse headlines in the 'non-kit' section. It's likely that you'll find many of your questions answered there.
Best of luck and have fun.
I would advise you, though, to re-think the idea of 40-45 mph on a bicycle. They're just not made for that. But I won't carry on with that in an intro post. I'll just leave it as some food for thought.