I am a homeschooling mom of 2. I have a lot of experiences, mostly learned the hard way, in this regard.
I have to say do your schooling, NOW. Homeschooling young elementary-aged kids is much easier than later on, at the middle-school and high school level. I homeschool a boy, 13, and girl, 6. The girl gets all her work done in about 1.5 hours. It's just so easy to do hers, cause she is still at that wonderment stage, where learning is nothing but fun. She is reading at the 3rd grade level (she just learned to read last year) and doing very well in all her subjects. We use Alpha Omega as a our curriculum and it works great. She also is learning Spanish as her elective. Yep, we manage to do all her schooling, plus 1/2 hour reading daily, in just about 1.5-2 hours.
Don't allow yourself to think for a minute, as they get older, they are that much more independent. Teenagers, if you ask me, need us MUCH more, in some ways, than toddlers do. There are so many areas where they can stumble and end up in trouble. Remember, as you approach the middle to high school years, your parenting/homeschooling energies will be directed at preparing kids for college or adult life. This is not easy! You have to physically BE there to do this---not struggling all day at school or a job. It's not easy, when you are homeschooling teens, but it is very satisfying.
I have learned this the hard way too: The work gets more challenging and teenagers are very adept at cutting corners and getting out of work if you do not watch very carefully what they are doing. This alone, is very time-consuming, trust me. They need your presence more than ever during these critical years. They are like toddlers in huge, hormonal bodies, if you get my drift.
My son is 13, like I said. His work takes so more time and energy on both our parts, to complete. He really does need a lot more guidance and oversight on my part. I would HATE to be struggling w/nursing school and homeschooling a kid at this point (8th grade and beyond) . Just to illustrate: His work usually takes about 5-6 hours a day to accomplish, versus the 2 hours for my 1st grader.
So, you see where I am going. If you want to go to nursing school/university--- NOW is the time, while they are young. From what I see, high school for my son, will be very intense around here. Esp w/our plans of using an online academy for his education base. I will take a lot more of my time and energy to help along and prepare for college. It's all I can do to keep up now, being a part time nurse and homeschooling mom (my husband is wonderful and supportive, but is military, so the education is mainly MY job right now)
Hope this helps. No time like the present, is my bottom line for you.
Please feel free to PM me or ask anything here, Would love to help.