The light circuit would be a better candidate for the receptacle but be aware of the "unspliced EGC" rule when you lay it out.
I pulled 2 EGCs when I did mine. The unspliced one went to the J box and another was used for the receptacle, switch etc.
My pump is 240v. I figure the I2R savings will pay for the extra few bucks I paid for the breaker ... eventually.
