Pumping to have more help

Is anyone pumping to be able to have someone else help bottlefeed? If you have a lot of supply I guess it is easier, but I was thinking about pumping a few times to see how much I could get.

I plan on only using breast milk, no formula. 

Right now I cannot leave the house for more than an hour. It would be nice to get out with my other daughter and do things for a couple hours and return to the newborn.