Buying or Selling: Medela

Cleaning Wipes for Breast/nipple and for Medela Pump Parts and Storage Bags

Hi, I'm stocking up for breastfeeding supplies and wanted to know... Do I have to use the cleansing pads specifically sold to clean your breast before breastfeeding or can I use baby wipes or other natural wipes instead? What about cleaning the Medela breast pump parts? They sell a specific wipe just for that too. Can I use something else? Does anyone have a recommendation for something I can use for all of these purposes? Lastly, I'm looking for recommendations on breast storage bags. I heard about Gerber, Lansinoh and Medela...