Short 1911s all suffer from incredibly short recoil spring life. On a 3.5 I'd expect to get two range trips, maybe three tops. The reduction in slide mass generates a bunch of issues and you should watch the barrel lugs carefully because most of those guns beat themselves to death pretty quickly.
If you want to own it, just keep it greased. If you want to shoot it, buy something else.
I respect your opinion a lot. I've taken your advice more often than not. But, I'm not sure I agree with you about the recoil spring life on the 3.5. I've shot at least 500 rounds though this thing in the last two years and there's not been one issue. While 500 rounds isn't spectacular, it's more than just two range visits.
That said, I do break this down after every other trip to lube it. The Glock just sits there w/o getting any love. 
I just need an excuse to look at the little Kimber more so an excuse is to take it out and clean/lube it. 
500 rounds IS two range trips for me. A short evening is 200, a longer (or more round-intensive drills) one is 300.
I'd replace the RS after 5-600 rounds or the gun will almost certainly start battering the lugs. You can also have a look at the firing pin stop - a flat bottomed one might extend the life of your spring. OTOH, it's a screwed up slide mass compared to an actual 1911 so tuning it can be flaky.
In general, guns below 4.25" get pretty weird. For me personally, 500 rounds is a month of running a gun and my experience with short 1911s has been that somewhere around 12-1500 rounds they've gotten really twitchy.
I mean no offense by this but if you're only going to put say 2000 rounds through it over the life of the gun, then you fall into my category of "owning it and keeping it oiled up so it doesn't rust".
I think my main shooter has had close to that since the summer...and that's only because I keep getting sent other guns to test, so I'm not shooting my personal guns as much.
Leaving barrels in the white = no surface finish on the carbon steel barrel. I've seen them arrive from the factory with rust on them. I have nothing against carbon steel barrels necessarily, but you need to know what you're getting into. Obviously if you go with a stainless barrel this is less of an issue but Kimber is kind of notorious for stainless that might stain less than their carbon steel...but it can be pretty stainy for stainless.
