You should hang out and get thirty posts and read the rules about posting for review and post a bit.
Also, you really need to get over that terrified of strangers thing.
However as for experience; my wife is a romance fan and science fiction is way over her head and past her entirely. However I had the delightful experience of finding that my story and her own drive to help got us past that and she was really helpful in getting the thing ready for me to send to the STRANGERS.
What I'd suggest is that if you have someone that will try to look at it that it's a good place to start. Just let them know that if it turns out to be 'not their thing' that it's no pressure and they should let you know.
My oddest experience was that most friends would say; once you publish it I'd be glad to read the finished book, which was just annoying since I was looking for beta readers. Then when I did publish it was like, 'Oh oh, if you need someone to help you revise this or work on the next one let me know.' Wasn't really sure how to take that.
Maybe they thought I wasn't serious about publishing until I did.
Here's a thought, and this will help if your unsure of someone stealing your ideas, send
@dannymcg a piece and let him do his thing and you can decide if he's a fit or not.