I've been asked by an owner of a large city mall to come up with possibilities o f printing extremely large archival prints for a lobby. Five at 48"X 96" and one at 48"X168", all from 4X5's. I have somewhat worked out the mounting issues, but the companys who own the larger printers are all over the p lace, all claiming different data about inks, paper and size. I realize length is less of an issue then depth, som e max at 60", some at 48", some at 44", Epson, Hewlett Packard, Lamda(sp?)....Epson is quoting their 200 year ar chivability, others say that's impossible. Any suggestions? Additionally, these prints will affixed to the wall only 3 feet off the floor, allowing all kinds of evil hands to scrape, gouge, poke their expression on whatever is u sed to protect the print surface. Hopefully the job can be accomplished without too much custom-only work.