you'd have to take into account your method of digitizing the film as well if you want to have an accurate simulation of that particular workflow--
I think you're better off doing exactly what you seem to be doing there-- use lightroom or some other such tool and adjust the HSL sliders until you can get a pretty close match to your colorchecker, then save that as a preset. Don't leave out some sort of grain, which you probably should apply before you start tweaking, as it will raise the perceived levels of the shadows. Those two shots you've got there seem kind of perfect to make this type of preset, but it's also going to be very scene/lighting specific, so it'll only really feel "right" when used in that exact setup (sunny clear day with a lot of contrast). If you were to, say, make a preset for Sunny Day, Overcast, Indoor Tungsten, Indoor LED, Indoor Fluorescent, you'd have a pretty good set of custom presets for that film type through your own camera, processing, and digitizing setup.
