Hello Daniel,
In my opinion you have no worries. The reason you may had been in negative at the time was because of the money you spent to rent gates to create routes. Remember to keep your DOC at 100% at all times and as long as your not spending more than you earn in a real day you will be fine. Just remember you have to spend money to get money.
Wish you best of luck and do not push yourself to hard...the beginning is always slow
