i've only recently joined, and am greener than your cleaning solvents, so i only recently (and by year/model association) found the story of your odyssey, and i just had to say my bit...
first and foremost...what you have accomplished is beyond human. truly, i have no words that can best what has already been said...your blessings have been deep, and your faith and dedication well rewarded. "awesome" is a word that is bandied about frivolously, and rarely has opprotunity to live up to its awe-inspiring roots...well, in this case, it is possibly the only word to truly represent your accomplishment...
inspiring, not only of "awe", but in so many little ways, as to be nearly transparent...indeed, spiritual inspirations!
i watch the video of your son, and i couldn't help lamenting that i'm a mo-tard because my dad (who was pleasant enough to be around, but as disengaged as a worn clutch!) was the kind of guy who taught you that oil changes happen every 3k miles on cars, and here's a coupon for jiffy lube...
what you do, and what you've imparted to your son, is not only an inspiration to create, it is a dedication to persevere, against everything and all. you've shown him something that is sorely, sadly lacking in the current culture...a hero, a role model, and above all, a great dad.
this is why i'm digging into mine...to break a cycle through a cycle.
thank you, and bless you!