Hi EdgyVeggie. Welcome to YT. I don't envy your position, but you sure seem to be doing what's best for Charlie, and that's looking for information. Unfortunately, I have no expertise in this area. Hopefully, some other YT members will be able to give you some advise. Usually, they do.
In the meantime, you might post your question on another forum where I've had luck getting advise. Here it is.
http://www.webpagetutor.com/mightymite/
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Mike ~ Doting Dad to Jillie, Harper, Molly, Cooper, Eddie (RIP), Lucy (RIP), Rusty (RIP) and Jack (RIP).
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