Requesting info on death investigation

I am currently a travel RN with 4 1/2 years bedside (3 years in ICU) experience, and I had always thought that forensics nursing was restricted to sexual assault victims. Although the idea of evidence gathering intrigued me, I never pursued this specialty because I am a male nurse and thought that examining female victims would be insensitive for them and uncomfortable (to say the least) for me. I just found out this afternoon that there are sub-specialties such as death investigation in existence. Now I am full of questions about this exciting field. So here is a list of questions, and if anyone can give me any info in regards to any or all of them, it would be muchly appreciated;

-Is it possible to specialize in death investigation, or other specialties, without being involved in sexual assault? Or is sexual assault still an intrical part of any forensic nursing? Will I need SANE certification regardless?

-I currently have only my ADN. Is this going to prevent me from pursuing this field?

-How does the pay compare to bedside nursing? Do you have time to pick up part time or perdiem shifts for extra money, or does being on-call prevent this?

-I have already requested info from Kaplan, but are they respected by employers? Are there any better online programs I can look into? Am I better off looking for forensic nursing courses, criminology, or something else?

Thank you in advance to anyone kind enough to reply, and I apologize about the length of this post.