Hi,
only flew the DA42 once myself but the school I was working, weren't really happy about the engine reliability and spare dispatch by Diamond.
But it's a really nice a/c to fly, I enjoyed it much more than the Seneca, and SE handling and performance I found it better also (but I'm not really experienced on ME). Probably transition is much easier also.
And that commander you are rebuilding sounds like a nice plane also.
If it's properly rigged and can fly properly sounds like a good deal.
new avionics including glass cockpit (G500)
lovely!
cheers / Pablo