RN/BSN help

I know I want my BSN because it will hold more doors open for me. My husband and I are pcsing to Hawaii in February for three years, and I'm trying to find a school there that will accept most of my credits from the college I attended. So naturally I'm applying to schools right now. My dilemma though is it looks like it'll be better for me to get my ADN rather than my BSN because most schools there are private (expensive as all get out), don't accept most of my credits so I'll be going in as a freshman, and consequently, I wouldn't be able to finish my nursing degree in the 3 years there. My question is... how hard is it to work as a RN and get your BSN online or in the classroom setting? I'm a mother of two, a 4 years old and a 9 month old, and of course a military spouse, but after Hawaii my husband is getting out of the military and there are no set plans after that.