Sol, can only say the same as all the rest.
My mum was another one who was diagnosed with bowel cancer at age 70. They successfully removed a section & she lived a normal life for another 20 odd years, so if they've caught it early, you've got an excellent chance that everything will be fine!
On the subject of the screening kits, my GP said not to bother with them as I get the 5-yearly up- & down- oscopies.
Good luck & best wishes to you & your family.
Graeme