Here's the good news: everything you currently think is in the way of your success isn't. You have enough information. You've prepared more than most. The money, the time, and the team will show up. But only if you begin. Right now.
There is no perfect time to start. There is no perfect course of action. We're making this all up! Waiting for the "right conditions" is just a higher form of procrastination. Good things happen when we begin to move toward our goals. Our body language noticeably shifts. Others become aware of the change in you and step into your wake, getting their lives out of your boldness. As Newton's first law of motion notes, objects at rest will stay at rest and objects in motion will stay in motion. How you move from rest to motion is through the act of committing.
Perhaps there's no better way to sum this up than by this quote from famous Scottish mountaineer W.H. Murray:
"Until one is committed, there is hesitancy, the chance to draw back, always ineffectiveness. Concerning all acts of initiative (and creation), there is one elementary truth, the ignorance of which kills countless ideas and splendid plans: that the moment one definitely commits oneself, then Providence moves too. A whole stream of events issues from the decision, raising in one's favor all manner of unforeseen incidents and meetings and material assistance which no man could have dreamed would have come his way."
So what are you waiting for? What have you been putting off for another time, believing that you're not ready to start? Start it today. You're cheating yourself and the world by holding back a second longer.