Do you have coverage now (as an RN)? I suggest you contact the company that is covering you now, explain your situation, and see what they recommend for your circumstances. That's what I did when I was starting a CNS program years ago (my company said I was covered as a student under my existing RN coverage, and there wasn't even an increase in my premiums. Of course, that may be different for NP students).
Insurance is one place that I would not "take the lowest bidder." I work as an FNP for a neurosurgeon and my insurance is about $4000. Mostly because of surgery (RNFA) and small amount of pediatrics.
Find someone who is an expert at insurance, there are multiple flavors of policies out there. I would recommend not going with the "state minimum." My policy is a 1 million / 3 million. I understand that if you are more so in primary practice this would be overkill. Bottom line... Ask a professional, we go to school to help patients, not obtain insurance policies and contracts.