Everyone has dreams of something they want to do. This can be your child's. When he is older, he can work extra jobs to earn money, save up, etc.
I agree.
OP, I really don't think you need to worry about hobbling your son or stunting his intellectual growth. If he has a deep and abiding love for his chosen subject, it will, er, abide. If not, he will turn his intense focus and ability to understand and remember to something else. He may go through many such interests as he develops. And while it would be nice to take advantage of the museum-study offer, if you can't, you can't; and it sounds like the money you do have can be well spent on books, classes and science gear. He's only seven, and you are in the early stages of a great adventure.
