Welcome to SuN !
Thats so nice to hear that you are ready for the plunge :). I can understand all those chit-chat going in the head while switching from a full time "certain" job to an "uncertain" business. I used the word uncertain because you never know what can happen in business. You need to continuously monitor your priorities, your strategies, your problems and your solutions. But be assured that when you take the leap into the unknown, it is no more an unknown arena. You WILL know what you have to do :). So take the plunge the enjoy this big ocean of Entrepeneurship.
All the best :).