If it were me, I'd do it myself since nothing has to be 'fitted'. I do all of my own gunsmithing on my pistols. Most of them being Glock helps a lot, but even on my SIG. Along with the armorer DVD's and such, the internet has vast resources for the DIYer, and I beleive in funds retention. I did plenty of work on my former 1911 models, one Colt, and one Norinco, and know this is relatively easy with the proper tools. Here's a start for you barring any strange differences between your Kimber and the basic 1911.
http://www.coolgunsite.com/disassembly/disassembly.htm

Need a manual for damn near any gun there is? Check this guys pages out. He has pdf manuals for about everything. Pretty cool guy too. well worth looking around his site. Here's the manual link http://stevespages.com/page7b.htm