Well we're all different, but for years all I had or felt the need for was the 50mm 1.4 and the 35-105 f/3.5 macro and I would lean strongly toward keeping the latter. I later added the 35-70 f/3.5-4.5 which is cheap, light and compact; while a great walk-around/snapshot lens, it has considerably more distortion than the 35-105. I have a third party 35mm and a Canon 50mm 1.8 but those were inherited, along with an AE-1, and I don't really use them.

My 2 cents