You should focus Crit as much as possible, then take a balanced approach between Direct Hit and Determination while Skill Speed needs to only be around the 700-900 range.

This is currently the favoured BiS set for DRG: http://ffxiv.ariyala.com/121CP

Since you're probably using the Lost Allagan weapon, this is what you can focus around for now: http://ffxiv.ariyala.com/12V62