If you are starting in the newborn period, we suggest 70. Know yourself, your baby, and your style. Dads tend to use more wipes per change than moms, so if Dad will do a lot of the changing, get a few extra packs of wipes. They are not a big investment for 2.5 years of use. Add those in to your figures, too.
Needs vary a lot.
You don't need more than you can fit in your washing machine. Check out our Package Deals page for ideas. Sample pails shown. We don't sell diaper pails. We used the Rubbermaid 13 gallon tall kitchen garbage can with a foot pedal with a Re-Uz'm Diaper Pail Liner in it, pictured above on the left.