For a lightgun, I would use a sm750. Rangefull and compact. Can't go wrong. Plus, it may be the only airtank you can fit in there without it being homemade.
Don't go to freewebs, their tools are annoying as hell. I would suggest weebly, domains are cheap and you can use stuff that they have or put code into the page. It's by far the easiest site builder I've ever used.