When I attended the information session last year, NBPNP were mainly targeting IT professionals and people in the Food service and Customer service industries e.g. admin, cooks, bakers, etc.
I do see that currently NBPNP are holding job fairs in Mauritius where one of the NOCs listed in 3012. If you can possibly attend this job fair (registration seems to be open still), and hopefully be offered a position, then the immigration process will become much easier since you will be immigrating with employer support.
If you attend an info session, you will have to get a Canadian licence (I think it involves verifying all your qualifications plus writing an exam) to practice as a nurse as it is a regulated profession - I doubt you will get an ITA/nomination without the licence.
Remember if you get provincial nomination, you get
600 additional points for your CRS score, so it doesn't matter then if your CRS is low. 600 points alone is enough to receive an ITA. Unless you are trying to get a direct ITA from CIC and need to boost your score for that, I would recommend including your spouse and child as accompanying when you create your EE profile.
Example case:
Current CRS score (including spouse) : 360
Current CRS score (excluding spouse) : 380
CRS with nomination (including spouse) : 360 + 600 = 960 - guaranteed ITA from CIC
CRS with nomination (excluding spouse) : 380 + 600 = 980 - guaranteed ITA from CIC
So you see, if you receive the nomination, there is no need to put your spouse as non-accompanying in your EE profile
Hope this helps