I did this back in 2016.
But propane is so cheap now that for a $$ standpoint it does not make sense for $ / time.
The main problem is the generator will wear out quickly and there are many replacement parts. For me being in Florida getting a large bank of solar panels to where I don't have to make charcoal or work on an engine just made far better sense for the time /effort ratio.
However, if we goto war with China and we get our oil supply cut off I will pull this idea off the shelf and put it into motion.
I have focused on building larger lithium battery bank I am now up to 20 KWH of storage right now ( 10 KWH ) online slow getting more online as I figure everything out.
Look up this website for awesome sauce info about wood gas ->