Mayor of Murderwood
Alzzak
If that is the case, I would suggest taking Powerful Charge, and other charge related feats? Being moving ten feet activates charge, same distance for the Scout's Skirmish.
Ether way the choice is yours, have fun welping
Since we're starting at 5th level, how should I do the level distribution? 3 Swash/2 Scout?
It is up to you, personally I would say it depends on the DM. I mean if you could change the Rogue/Swash feat(Daring Outlaw, I think...) for a Swash/Scout type(Skirmish Damage and AC bonuses instead of the Rogue's Sneak Attack Damage), by all means do it. Otherwise, it is +1 BAB and Insightful Strike vs +1 to Skirmish AC, +10 Movement speed, and Trackless step(somewhat useless, unless if you are being tracked... then it is a god sent)
Again, I am only giving choices... your character, your build, your creation... Your choice.