Technically the DesignJets aren't plotters. They're giant inkjet printers. Looked up some specs for the 1055C:
http://www.cesplot.com/plotters/designjet1055cm.shtmlI'm not sure what the "m" in the model number means, but your specs should be nearly identical. It should be plenty capable for printing your artwork. On the DesignJet 5500 PS that I use at work (at Kinko's), most people opt to print on the "instant-dry banner, gloss" material. It's cheap and prints well, but is subject to scuffing and creasing pretty easily. Laminating it solves that problem. My marquee was printed out on the backlit material. It looks better than the gloss banner print that I had first made. The backlit doesn't get washed-out by having the light behind it.
the others:
http://www.cesplot.com/refurbplotters.shtmlI'd guess that the 750C would probably work OK too, but the lower resolution printing wouldn't show detail as well.
On these links you can get an idea why printing on these is so expensive. A DesignJet 5500 PS like most Kinko's have is about $20K to buy new.