Deciding between full time vs part for online FNP

I will be starting an FNP program this April through the online Frontier program and still haven't quite made up my mind about going full time vs. part time. I currently only work 32 hr/wk night shift and would prefer to finish in 2 years vs almost 3. I'm single with no family committments, but I'm also a little nervous about starting grad school as I haven't been in school for almost 7 years and have no idea how I'll do with the workload. I really want to maintain other non-work/non-school committments and relationships without being stressed to the max as well.

I have the option of cutting down on my work hours, financially speaking, to even 16 or 20 hours a week, but not sure that that's necessary at this point. I guess I'm not sure if it'd be wiser to do my first quarter part-time and see how it goes (they say to expect to put 30 hours in a week part time), and then bump up to full time and cut down on work hours second quarter after seeing how it goes... What kind of study/reading committment do people actually put in doing full time vs. part time and is the recommended study hours (30 hrs for part time, 40 hours for full time) a realistic predictor of what you do?

Any thoughts from those who've done it?