I was going to suggest booking your Maldives hotel via a travel agent in Singapore, who can get you deeply discounted seats... but that's not an option if you're burning hotel points.
One tip: if looking for cheap fares on SQ, always specify 2 (or 3) people when searching. SQ rarely does discounts for single travellers, but two-or-more person discounted "GV2" fares are very common.