Smokin Pre-Cooked Mini Ham & Raw Chix Together

[Uncle Max]

Hi, All.. I have a 2.25 lbs ready to eat Dearborn ham (sliced) that I would like to smoke with a coupla large chix breasts (3 lbs?). Normally I do breasts/parts at 250 for a couple of hours. I have no clue how to approach the ham. Should I use string to hold it together? And how long do I leave it in at 250? Or do I go lower/longer because the ham is smaller, and already cooked?? Thanks again everybody!