That's a cracker of a house you've got there, @Jackie792, and many of the questions you're now asking many of us have had before. The saying 'you've got to crack a few eggs to make a good omelette;' springs to mind, and we've all made a few clangers.
Ideally, your home guide (because it's quite a beast) should have been ready before pressing 'go', but you'll want to make sure it's there for the first guests.
It isn't possible to comment on your charges/deposit etc because you don't have any dates open to see what's what.
The vast majority of guests are decent people and won't steal anything. Of course, vetting them/building a rapport is key, and you'll feel better once you've started a conversation. And when you get that 'gut feeling', listen to it.
You can't negotiate per se, but you can send special offers (some will ask for discounts, and many - including me - see that as a red flag).
Your photos are excellent, alas I believe there are too many!
Oh, and what's with the frame things in pic 4? They look a bit random and/or abandoned.
Good luck with your first guests.