Hi, When my son was little he couldnt eat anything with gluten in it. He grew out of most of his 'celiac' problem, now he has a prob with just the 'added type'. I figured out that it wasnt just natural gluten. msg, modified food starch, wheat protien and there is other 'wording' for gluten, i cant remember at the moment, when I do I wil post them for you. Watch out for candy too.
With a family of 5 it is going to be hard to cook for, but not inposable, be creative. Do you have a problem with being in a room with fresh bread baking? Does it only afftect you if you eat it?
Try to find a natural/organic food/stuff store. You should be able to find corn, potato, rice products there.
Depending on where you live there may also be resteraunts that are gluten free, you could check a menu to find diff stuff that you may like.
Take care