Ranger|Centered Breath Monk who starts with a 20 Dex makes for an interesting PC. Spend a feat on +2 to +3 AC at 1st level - Unarmored Agility as an example or Hybrid Talent. You have Twin Strike with a Bow/Crossbow which also counts as an implement for a Monk - you can use Bracers of Archery with your Monk powers as an example.

Kind of a Zen Archer type. With Quicksilver Motion at level 6, you zoom into combat when you need to do it. Invigorating Stride is always a good power for some self-healing/move