thinking about the new msd atomic efi system

What your car came with can be diagnosed and serviced on the roadside and in most cases parts sourced in the nearest town. If aftermarket crap fails on the roadside, you might tow it all the way home.
We're not supposed to blast off with a cold engine anyway, even with EFI.
Lots of folks do it and the mfgrs appreciate it since it shortens engine life.