Having more kids after twins

Hi I’m coming on here because I am having baby fever so bad!! I have boy girl twins who will be turning 8 this month and we did have another boy after that who just turned 3 today. I was wondering if I could hear others experiences with have more children after twins. And also advice from any mommas who have already gone through the transition between 3 kids to 4 kids. Is it way harder adding another one after having 3? Is it a piece of cake since you’re already in a routine with your other children? I would love advice! I feel like if I had another I would lose my mind but can’t help but want one more little baby..