Man, you're getting a first tattoo? WAY Cool.
Plus, some excellent ideas, there. They're going to need a tattoo artist who is a whiz at the ol' black and grey, mind.
Look me up in a PM if you need any tips. I've a few contacts in the industry who could help you out. Dan Henk, for example, would do a real GRADE-A job on any of your ideas:http://danhenk.com/photos/tattoos
(PS is that zombie on the cross waving at me?