depressme i think this sounds like a fantastic choice for you. go for it with all you have! nursing is such an important job. the peace and comfort you can give people in that position is invaluable. with your existing schooling you have to be able to get the requisite qualifications in less time!
on another note, how is your grandmother? and how are you doing with surviving with the illness you were recently diagnosed with? just wondering so dont answer if you dont want to or pm me or whatever.
go for this goal because you would make a great nurse i think!
biiv