Yes to your smoker concept, not sure which model is best. It's on my own "drool " list.
Yes to Lodge cast iron pans. I'd get a regular fry pan, multi use, make your cornbread and tip it out and cut it into triangles yourself. The one pictured seems to be self limiting, to me.
Other than a pizza stone, not sure what all the other parts are.
I have a good mandoline, but find I use the super thin slicing blade on my food processor or just a knife and cutting board. Yes, to good knives.
You have a long want list of gadgets. Perhaps you should have a shower-party, even if you're not getting married.