How much cable should you buy to rewire your mobile home?

You will need 14-2 12-2 14-3 10-2 and 8-2 if you have electric appliances. I would run 12-2 to all your outlets on a 20 amp breaker and you switches and lights with the 14-2 on a 15 amp circuit get two rolls of each 250' pro packs. Also if you have any 3 way switches get 100 feet of 14-3. Start there.