Welcome to the board! Obviously, we feel very strongly about this group and us born-ins wish we could have made the choice to stop before baptism and those who converted wish they were back where you are now so they could make a different choice. This results in a lot of strong advice!
You have to make your own decision about what is right for you. Do research and don't let anyone force you to speed up your decision making process. You are an adult with a working brain; you have the right to deliberate. Those ladies are spending time studying with you and you may feel that you owe them something for their efforts, but you truly need to make your decision based on what YOU need and what is good for your family.
I am concerned about your husband. When I was a JW, I was taught that non-believing mates couldn't truly love their spouses because no one can love another without loving Jehovah first. They will view your marriage as being on the verge of divorce at all times, because Jehovah is not there with that third cord of strength, and will villianize your spouse at any opportunity. Perhaps you have already been told that Satan is using your husband to turn you away from true worship. Also, the elders will act toward you as if you have no husband to spiritually "guide" you and will step in and pry into things that are not their business. (very emasculating for dear hubby if you allow it) You obviously love this guy (you married him) Do you really want to be with a group that puts him down and actively tries to destroy your respect for him simply because he doesn't join their religion? I would never suggest that you choose one way or another just to make your man happy, but you have to at least keep him in mind.
As for demons, I spent time in the Catholic Church and my mother was Southern Baptist and they both put a lot of stock in demons and evil spirits, as well as angels and ghosts. JWs are not unique in any part of their doctrine or methods.
Good luck in your search. Be strong and do what is best for your family.