Yeah, wait a little. I got my first lucid dream without any reality checks at all, indeed, all but one of my lucid dreams so far did not have reality checks in. I recorded my dream for about 3 weeks before my first lucid. Word of advice: when choosing a signal for a reality check, don't choose birds. I did, and they hardly ever appear in dreams, at least for me.

And be calm during your first lucid. Take things slowly. You can fly, that's quite easy, I managed to shrink a house on my first lucid. Just don't do anything that would usually excite you; don't summon a member of the opposite sex on your first try! I am unable to maintain lucidity after that, after six lucid dreams.