Hello I am new too! So I guess I dont have the greatest advice since I am new to all of this as well, but I thought I would reply anyways.

I dont have much experience with sleep paralysis, the only time I have really experienced it is when I was trying to. So it was more of a welcome interesting experience. I am sure if I ever hallucinated stuff like you say, then I would not have liked it very much. =x I am wondering though, if you knew that nothing could hurt you and you sort of welcomed the SP as a step towards LD then maybe you might not hallucinate the bad stuff. I think if you are expecting to see bad stuff then you probably will. But if you are not afraid then your mind wont create the crazy stuff. Not sure if this is true, but just my thoughts on it.

Also you dont have to use SP to have a LD. I have had 5 so far and none of them involved SP. There are tons of methods and I am sure you can find one that will work for you!