Buy two or three large pots and one huge one for soup. Forget about small ones or buying a set. Buy two or three large frying pans and one small one for milchigs/eggs. A covered frying pan (dunno the real name for it) is really useful for chicken and potatoes (which we serve by the seder).
Buy crepe pans or a crepe maker for the lukshen. Keep it simple with plastic, but you might need a few dishes for serving. I have a service for four.
As far as recipes, keep it simple! Burgers, chicken, roast, potatoes and veggies. Stock up on lady finger for the kids, although my kids don’t eat them! Good luck!