Wishing you the best of luck, although in reality very little luck is involved.
My best advice:
Be prepared invest your heart, soul and time for the life of the business. The food service biz is just that way.
DON'T compromise on the quality of your product OR service for any reason. Serve a quality product at a fair price always with a smile, and you'll do great.
As for working with "employees", set the standards high and make sure they are clearly understood. Make sure they understand that the better the business does, the better they will do. You don't want to be a tyrant, but fair and strict, and make sure they understand why things are done the way are.
Probably nothing here you didn't already know, so I'm done bloviating.
Best wishes for your success!
Weber Performer with rotisserie ring, 22.5OTS, Maverick 732, Weber Smokey Joe,PBC Smokenator/Hoovergrill, variety of microbrews, Gin and tonic, variety of lighters.