Requirements to re-locate to B.C.?

I'm currently awaiting acceptance letters from two different schools I applied in the U.S. I currently have a Bachelor of Science in Biology degree. There's a program in my state that allows one to do an accelerated program to become a nurse (with a strict requirement of a bachelor degree in a different major). School 1 offers an associate degree for 10 months of intense training (no days off at all) and School 2 offers a bachelor's degree to be completed in 1.5 years (very limited days off). I want to attend School 2, but in case I don't get accepted and get accepted into School 1....both schools offer program for an additional year to upgrade from an associate's degree RN to a bachelor's degree RN. Anyway, my question is this? I'm trying to re-locate to the Surrey area to be with my future husband (yes he's a Canadian citizen....yes I am American). Will I be able to work as a RN in British Columbia after I take the Canadian nursing exam and pass with just an associate degree in nursing? Or do I or should I have to upgrade to a bachelor's in nursing for all my cousework to transfer? My fiance is arguing with me that I shouldn't need to get two bachelor of science degrees.......because my University will be awarding me a Bachelor of Science in Nursing if I go all the way....and I currently have a Bachelor of Science in Biology. My diploma only states "Bachelor of Science"...he feels that they are the same thing. I tried to tell him that they are two different things even though they both state Bachelor of Science, but he doesn't understand. He's even confused me now...I thought Canadian nursing program is almost equivalent to a 4-year nursing program in the States. He also mentioned that his ex-wife only went to nursing school for 2 years several years ago and is now a highly paid nurse making $80,000 a year. So, will someone please tell me if I need a 2 year degree or 4 year degree? I don't want to waste extra time and money if I don't have to....especially since School 1 is a private, Catholic school and very expensive (twice the cost of School 2).
Sincerely,
Bride to Be