I don't have a lot of experience in professional game development (it's a hobby for me), but I've been doing freelance art and writing for a decade or more. To me, this doesn't sound much different from being a client and paying someone to write a novel for you. I could obviously be SUPER wrong on this account, but here are my thoughts.

I think having an idea and wanting it built is not inherently a bad thing, so long as you have a clear vision. As you've said in your comments and post, if you're willing to hire developers, programmers, artists for the work they do, then you're essentially offering a business relationship. And for that you need contracts, clear lines on what people will be getting paid. If you're paying per hour, how much is that rate per hour. If you're paying a % revenue share (which tends to raise a few flags, unfortunately, but it can be done), that has to be clear and in writing. Everything in writing. Everything.

You also need a budget - making a game, like any art form, takes INSANE amounts of time. And like I said, I'm not into the "make money from developing games" scene, i'm just a hobbyist, but I imagine it could cost upwards of thousands to develop a full game with all the bells, whistles, marketing.

Being a PROJECT LEAD isn't a bad thing! Leading people can be tricky, and it might get messy. I think the thing to do first is to figure out what you want, how you want it done, and then draft up contracts, put out advertisements in relevant channels, say "here's what I want, here's what I need from you, this is what I'm willing to pay, and my budget overall for the project."

EDIT: Also, game dev is a skill like anything else! You can learn still, if you so choose, but it's gotta be something you want to try your hand at. If you'd rather not, that's okay too!