Jim,
First off, prayers and best hopes to you and Janice. Then as far as financial support, are you in a volley dept. or paid? I see you wrote you are also in construction I think. so I would guess it is volley.
Reach out to the community, and contact local banks. They can set up funds in your wife's name for people to donate to. You would be surprised at the support. My community has mercy pilots to fly out for chemo, meal delivery, household help, people pitch in when other's need it. We are are small community, so we help out when we can. I bet yours will too, if you ask.
I wish the best for your family.
Chaser