I would keep your favorites/weather-size appropriate and return about 2/3's of it.
I have no Idea what i have, but it's alot, but alot was given to me as gifts as each kid was born as well as hand me downs and new outfits I *HAD* to buy for each baby. As I go thru boxes of sizes I'm tossing into good will ones that are not my favorites since I have so much!
I love baby clothes