I think the best options for US-Maldives are with AA, Alaska, and Singapore miles. Of those, Singapore are the easiest to accrue. AA aren't far behind, and there are more routing options with AA (Etihad, Qatar, Cathay). AA Executive (75k but with $450 fee), AA Platinum (50k), SPG (30k [until 9/14/15] + 25% transfer bonus to AA) all have signup bonuses that will get you lots of AA miles quickly.