First, what do you really wqant 'self sustaining' to be??
There is an old addage that a 'good electrician' does not mean necessarilly a 'good businessman'.
Most, if not all small businesses require an investment of time and funding. Cash flow is very important, key personal are important, as is a solid customer base.
Doing 'contracting' and maintaining a full time gig with bennies is a tough nut. BTW, are your children interested in the business & trade?
