I have seen home based billing companies start with less experience than you have, and they succeed, and others start with more experience than you have, and they fail. And everything in between, for that matter.
I really think so much is contingent on who you know when you are starting out, and good word of mouth, for referrals. If you read through the many threads on this forum about starting a business, you will see people who are asking the same question as you, and more questions beyond that, as they move through the process.
Best of luck to you, should you decide to move forward with your own company!