Hey Mod Bod, that sounds like a good idea. I have noticed that the steps you have suggested greatly improve the timing and feel of a midi performance, but there is a point of no more benefit and computer gaging a little. I'm sure you are going to test it out and determine if you have gone too far.
A suggestion....If you can... run a mic at the same time and capture room noise. It will personalize the recording. You will hear his foot pushing the damper pedal, he might grunt or laugh as he plays...things that will mean much more than the actual song. Mix that in the final recording. If not a mic, run a video camera, load sync and mix that audio into the recording.
Good luck, have fun, make people happy.