Gunbroker or Guns America might be sites for you to consider. By the way, Kimber does make a 9mm 1911 - one model is built for the USA Shooting Team and is available for purchase by the general public. A portion of each sale goes to support the team.
There are a number of firearms manufacturers making the guns that meet your spec of a 9mm-chambered 1911. Another option is to get a 1911 in .45 ACP and then get a conversion kit. Though more expensive, you'd have the option to shoot both calibers while you learn just one trigger.
I've only fired a few 1911 but none of them were in 9mm. All I can offer is that I've seen some people talk about making sure that you get a well-built 9mm 1911 because there's more to a 9mm 1911 than just a different barrel and magazine. There are geometry changes in the feed area that need to be done to make the gun run reliably.
Hopefully someone more up on all of that comment for you.