I original poster stated "sugar" in his original post, not "carbohydrate." Try and keep that straight. Yes, you will survive and be very healthy without sugar. Yes, you can be very healthy with a low carbohydrate intake. Is a low carbohydrate intake necessary for good health? No. But most people would be smart to greatly reduce their intake of refined sugars.
No, I didn't realize there were carbohydrates in whole wheat bread. Thanks for clearing that up for me.
Carbohyrdates are not essential to jump-start metabolism. I'm not actually sure what you're getting at here. Your lean body mass actually is the biggest metabolism driver. People think their metabolism drops dramatically overnight because they were sleeping. It takes ~72 hours of not eating at all in order to see a drop in metabolism.
http://www.ncbi.nlm.nih.gov/pubmed/8172872
Considering that two of the vitamins you mentioned, A and D, are fat soluble, I'd say that consuming the fat and protein of healthy animals (grass-fed beef, cold water fish, butter, cod liver oil, etc) would be a good way to ingest a healthy amount of those vitamins.