If your wife is acceptable to the company she can train you.
I took a wife along myself many years ago, we did a year together more or less.
I do caution you that if SHE tells you something, you do it. Its nothing personal, sometimes it's earned by blood, sweat and tears.
The payroll will take care of itself. ALWAYs without fail set aside against famine weeks and have enough for both of you to get home from anywhere in the USA at a moment's notice.