This may be more info than you asked for, but....
I graduate from a FNP program in Dec. Here are my thoughts. Eventually the thought is that every NP program will be FNP based--with speciality coming out of that. Many students in our program did specialty hours within the FNP clinical semesters. For example-if you do 200 hours your last semester--then do 80 in the ER with the remainder in FNP. Margaret Fitzgerald-who has written many review books and does live seminars--said the FNP's are more marketable.. (as you can do any age).
As for working full time--I have 3 children--and saved money to go very part-time the last year. Otherwise-I would have never seen them.
Also--I wish someone had recommend that I get the Fitzgerald Review CD's when I started the program. It would have been so helpful. They are entertaining--can listen on the way to clinical.. I wish you the best in the next 2 year journey.