I'd be happy to help with your autostart. My Listeroid 6/1 has remote start via a Picaxe controller, software is the Picaxe free basic. Easy to modify for your needs. I intended to do autostart, but since I only use the generator-battery charge feature about twice a winter (mostly just to make sure it's working), it seemed not worth the effort.
Three important things needed for autostart:
Starter motor/drive
Exhaust valve lifter/decompression for starting if needed. (Also a good feature for emergency shutdown.)
Rack Closer