...this is probably too advanced for a beginner such as myself, but I'd like to be able to order everything I'll need as soon as possible, that way I can get to it once I understand how to get to it. I'll be getting the starter stuff too, of course, the Arduino board, probably a protoboard, transistors, leds, wires etc... if there's any kits or modules that you'd recommend, please do!
Advise you don't get a bunch of stuff that may prove to be of more use to others than yourself!
Generally postage costs and speeds rarely mean that you have to plan more than a week ahead what you might need.
Have you seen the book "Getting Started with Arduino"? Its cheap and you can probably guess what its about ... 
Regarding displays INSIDE (or on) a helmet visor.
I don't think most folks eyes focus in that close.
Suggest you try it with something like a piece of newspaper before you start buying heaps of stuff based on that concept...