Great shots Gravity, I can see your 'fisheye' in action. I was in somewhat the same position several years ago, that is trying to find a liveaboard for 4 or 5 days and not spending a fortune. I ended up diving with a land based organization in LBJ called Reefseekers. No complaints and the price was decent. But as mentioned above to get to the southern dive sites, a liveaboard would be a must, and that was the one drawback with being land based was the long boat ride each day. As an avid diver in SE Asia, I will agree that the water was strikingly cooler on some dives, especially when considering your latitude!