Yes, it's okay and that is actually my plan. I'm graduating in May, but already looking for work and plan on starting my BSN in August or January. Since I want to work in a hospital and most hospitals are going for magnet status, it just makes more sense for me to get the BSN. Most RN to BSN programs are online, but there are a few that are hybrid. My advice is that even if it is all online, make sure that it is a brick and mortar institution just in case something happens. And of course make sure it's accredited.