The most important thing for a business is finding customers. You may know the work but you won't have a business without customers. You need to figure out how to find customers and the rest is relatively easy.
Can your wife help by focusing on getting customers for you?
I did this stuff for a long time. Made a good living until the tendonitis forced me into a desk job. This is the kind of business you market through real estate offices that need FHA improvements, inspections satisfied, and details done in order to save deals. Also through hardware stores and local lumber yards that regularly get folks in asking for help with a new mailbox/toilet/sliding door/dead bolt etc etc etc
Keys to profitability are getting a deposit before starting work, having a minimum charge, and marking up the labor & material & travel for a profit.
Avoid debt, and build a cash reserve & you can make a decent living. You won't get rich, but setting your own hours & doing work you enjoy is a beautiful thing.
