sadly the game has too much "cheese" dont want your house raided. raise/lower the ground. cant haul meterals and ore through portals? logout to temp world drop everythign into chest... go through portal in your main world. then go collect your stuff from the alt world. (my friend does this and its pisses me off)

the difficulty in the game is very difficult to adjust without mods. honestly you should look into some mod reviews on Youtube because THAT will greatly extend your experience in the game regardless of seeds. just avoid the cheaty stuff. some things people make is just gross. plus playing the game with your kid. heck yeah that's a blessing i always wish i could have done with my old man! that alone is the best experience.