I agree with doing your practicum in the NICU if you TRULY know it's what you want. I did my senior practicum in the NICU at a level III/IV hospital and absolutely loved it. Don't even worry about having trouble with the NCLEX if you take a practicum in the NICU, in my class there wasn't any correlation between passing the NCLEX and what areas people choose to specialize in. If anything, some of the med/surg girls confused themselves because NCLEX is the "text book perfect way" to do things and what they saw on the floor is not always the correct thing ;-) Good luck!!