Order of Feats for a Crossbowman, Advice needed.

[Cranthis]

I'm building an Overwatch Style Crossbowman (Fighter Archetype) and was wondering what order you guys would do the feats, from level 1, to level 6ish. I intend the character to go past this point, but this is where the real cluster of necessary feats is at.
The feats needed are:
Point Blank Shot, Precise Shot, Rapid Reload, Weapon Focus, Overwatch Style, and Crossbow Mastery.
The weapon type of Weapon Focus doesn't matter, thanks to retraining. All that really matters is the order of feats.
This character will not be a human, so only 2 first level feats.

[Geddy2112]

Point blank shot and precise shot should be your first level feats. Then weapon focus, rapid reload, rapidshot, crossbow mastery, overwatch style.

[Grod_The_Giant]

Point Blank and Precise Shot, followed by Rapid Reload. Crossbow Mastery can be pushed back, I think- it really only seems necessary if you want a heavy bow, which is a minor boost. You do need Rapid Shot for Overwatch Style, note. (I'd take it after Rapid Reload, then go Weapon Focus and Overwatch Style.)

[Platymus Pus]

See if you can talk your DM into crossbow sniper.