How crisp do you need it to be to fit the style of your project? If you can stand a low level of grunginess, you might consider the acetate and ink-jet rub on method since that would let you print in sections if necessary and piece together as you go.
All you do is print mirror image onto the shiny side of a transparency sheet with an inkjet printer, leave it alone for 10 minutes or so and then lay it face down onto your project and burnish with something like a popsicle stick. It's a very verstatile transfer method but it won't be as super crisp as printing directly onto paper - I've attached a couple of postcards I did this way so you can see how it works (the fishy one because it was on an acrylic painted surface and the Elvis one just because I fancied doing it that way!).