Hi Brian,
It would be hard to handle a tray full of chemicals at that size I would think, but maybe? Your tray siphon will do fine if only one or two prints are done at a time. Use a pinch consisting of your index finger and thumb and
you shouldn't have any problems with kinking the print during handling. You only need enough chemistry to cover the print, no need to fill the tray to the brim. As long as the capacity of the chemicals are followed, use the
just enough to easily cover the print while agitating. It's not much different than 11x14 really, just takes more space in the sink
good luck with the prints!
regards
Erik