Cloth diapers are very hard to clean and maintain for someone who cannot do laundry every other week and have to use laundromats. they are just like regular underwear / briefs that you go to the store and purchase in a pack where the socks are sold at and they need to be constantly washed each...
I use disposable under pads that are from Dollar General and they come 30 in a pack. The size for them are 30'' x 36'. They should be big enough to take care of your needs.