I am not a guy, but I saw your thread and thought I should comment anyway :)
I am working over 40 hours a week currently while in my 1st semester of my nursing program. I am not going to lie to you, it is not easy. I don't have the comfort of a flexible job and I work 10 hour (Though more often like 12 hour) nights 4 nights a week. It is not easy but it is cerainly possible. There are several women in the class who have children and work (several full time) and they manage because they have a good support system.
So if your kids are pretty much grown, your home bills are taken care of, your job offers flexibility, and you can get financial aid, by all means go for it! My only advice is take all of your pre-reqs FIRST. Do not think that taking API & II while taking NUR 111 and 112 is a good idea. I am telling you this from a bio grad's standpoint. Most of this material isn't new to me but I still don't think I could hack those courses at the same time while working. The more pre-req's you have out of the way, the better off you will be. While you prep for your entrance exam, start taking those pre-reqs. If you do it that way and be prepped to work your butt off, you will be fine!