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>Would something like $50/hr be crazy high or crazy low?
Charge at least $300/hour. I'd say $500/hour. In France, it's more "jour.homme (JH)" (man.day). Compute your rate.
Set the precedent of someone actually looking at your rate and say "That's acceptable". You don't have much experience so it'll probably take you slightly more than the time you "bill" to actually do the job, but don't let that "delta" get big. Going above and beyond didn't hurt us.
You get more efficient with experience, and streamline your process to getting things done, document templates, your workflow, etc...
Do not think of it as "freelance consultancy", or that you're a student. You have expertise and you're solving a problem. What would happen if someone went on without that expertise? Would it mean a military plane being neutralized?
Here's something you may find useful for later, if you want to do consulting through a consultancy: https://twitter.com/jugurthahadjar/status/131066829330549965...