That's what I'm planning to do, as well.That's totally fair. Personally, if/when I run it (I'm going to be playing it next; I ran a playtest very briefly) I'll be having relationship rolls at the end of sessions and I'll probably pre-think in angles for ways I can use all of the ones the PCs select (I have a group of 4, so it's probably not even that many of them).
I agree that the icons (and the relationship rolls) are one of the hardest aspects of 13th age to grok. But I'm definitely prepared to meet the challenge!
I have a feeling that 13th age works best if the majority of stories revolve around the PCs motivations and history, which may make it harder to use published adventure modules, but I'm used to heavily modding these anyway, if I use any at all.