You can usually skip the discussion meeting if you do the 1:1s, and your design/plan will be much better as the discussion can be deeper in 1:1s. I've been a in a huge number of design reviews where a massive flaw is pointed out and the reply is "well we'd love to talk more about it but we won't get over everything if we do...", and the meeting continues discussing the details of a plan we just showed won't actually work. You are also playing with the human dynamics of not wanting to look bad in front of a lot of people. Large discussion meetings are usually a waste of time and result in sub par plans.

As an IC you play with the rules you've got.