Thanks for your input, you three. The priority is certainly just getting the numbers in there where they're supposed to go. New parts from these sets will be in CGI quality, of course. Some older parts could benefit from an upgrade, things with complicated curves or unusual surfaces - animals for example, and clear parts like the harp in 5451; and there are some older parts whose pics are dreadful only because the only instructions I had that showed them, were low quality or too small. In short, I'll suppose I'll upgrade as I see the need and get around to it.
By the way: donations always welcome. I've gotten by without advertising so far, and would love to continue without. But information and time can't be bought, and that's what I'm always most in need of.