Have a few questions?

I am interested and found an NP program at the same university I graduated from. The school has an Adult NP course. My question is if after going through the adult program can I practice as a Family NP or do I need special certification for that? Also how did everyone finance their graduate education? I already have 20,000 in student loans from undergrad, will they allow you to take additional loans? I currently work in HH and have private duty cases, some which are very easy and I think I will be able to work full-time and go to school maybe part-time. I am also wondering if I have enough experience. I am going on 2 years of experience some in OB, most in community nursing such as school nurse and HH. I seem to enjoy my autonomy in HH and mainly why I stay. I tried surgical floor, did not like at all, the 12hour nights were exhausting. I especially had a problem with how afraid nurses were with calling or paging an MD with issues, even if it was 6 in am. Anyway, I am truly interested in NP program, has always been my dream. I am a little worried about finances, paying for school and being able to pay my mortgage at same time. Thanks for any responses.