Looking for a crawfish boil with other sea creatures recipe.

Is this even the right name for what I'm describing? I'm also cooking for three people and this will happen in my kitchen.

I want so use crawfish, Dungeness crab, clams and shrimp (with the head still attached). I also want do to potatoes, corn and sausage. What kind of potatoes and sausage should I use and do I cook those before adding it to the pot or is it served separately?

I'm also looking for how I'm suppose to season it and the cooking process.

Thank you so much for the help, I can't wait to learn a new dish.

bon appetit