hey lucy,
how long were you planning on traveling? i'm not sure what your stats are, but if they're pretty competitive, i think it's ok to travel. i submitted my AADSAS app sometime in june (i think the 21st) and I traveled to China for 2 months. when i came back i had some secondaries to complete. of course, i'm sure it would give you better standing if you completed the secondaries as soon as you got them, but i think if your stats are good enough, it shouldn't matter TOO much. but yeah, honestly, playing it safe is better (not traveling), but i'm just telling you this to show you that it is possible to travel and get accepted.