I go to UT Arlington. They are very flexible and allow students to take a full course load, 2 at a time or just one a time. If you take one at a time it will take you four years pretty much. Two at a time takes right at three years.
As far as working and what is *doable* as far as classes, you really have to know yourself and your ultimate goal. I attend school with students who are THE breadwinners and their goal is to get in and get out in the least amount of time possible. Their lives are *crazy*...work and school, work and study, work and school. But hey, the gig will be up in two years and I'll still be plodding along.
Two classes at a time is more doable, but some of those students have cut their work hours if possible down to just two 12 hr shifts. I think most of us have found that with the initial coures such as patho, pharm, theory, research,etc. it was no huge deal to take two at a time and work full-time.
HOWEVER, when you start your first clinical class it all changes. We have 48-54 hours required in clinical just with this one class (Advanced Assessment). That combined with one whole class day a week (9-4) PLUS finding time to read, study and write papers and SOAP notes AND take online quizzes...makes it more than it seems. A lot of people have been taken off guard by this after plodding along working full-time and managing their internet courses just fine.
Everyone has a different take on how they need to proceed with school. For me, I am in no rush. I am not the primary breadwinner, I have a family and do NOT want to graduate in debt, stressed out and out of shape. I take 1-2 classes at a time, work about 12-18 hrs per week and have time for a life, for my family and to take care of myself.
DO be aware that it is a different kind of "hard" than your coursework for your BSN. The critical thinking and the level at which they want you to process the information is above and beyond what you encountered in undergrad.
UTA has a great pediatric NP program.