Also you should consider level dip into dragonmark heir (which you can enter after 3th or 4th level) as it provides you for free lesser dragonmark (so spares a feat and dragonmark heir has plenty social skills and other perks longer run). I also ruled dragonmark heir has UMD as class skill (so you easily get 4 ranks to UMD to qualify as captain even if you stick mostly as swashbuckler).