Cloistered Cleric is almost a must for travel devotion, you might get out in a decent way using Greater Manyshot, but I think the Travel Devotion path is better.
Soulbow and Kensai aren't worth it at all. Splitting and Lucky enchants work perfectly well on real weapons, no need to waste class levels on stuff you can buy.
As far as Scout go, 3 levels is all you need, 4 if you need a feat. The 5th one is really only useful if you want to trade away Ranger's Evasion for something else, but I'd advise only getting 4 levels so you don't lose a point of BAB