There is no risk. Yeah we all know Henry's been very slow in the past but there's never been any financial risk. Show me one person who didn't get a refund immediately on asking. I don't think there is one. Henry may be bad at estimating time and other general cs-related stuff, but he's honest and trustworthy. I'll let him hold my money for 6 months knowing full well that if the light doesn't happen for some reason I will get my money back.
I didn't mean to imply there is any risk, and apologize fully for doing so. I only meant that $1k is significant (for most of us), and 6 months is a long time to part with it.