I googled x-chip, and 1300 +/- hits came up. So, I have to ask you....
Do you have the x-chip items?
Do you have mfg name, model #, etc.
You need the mfg literature/instructions to determine the correct method to install. Don't forget, LED's require drivers that have to be installed too.
BTW, lighting showroom guys are either very good, or very bad. If you track down the mfg., they usually can be helpful, specially for a 'sizable' order like you indicated above.