Hi the_shams, welcome to HLF.
I'm not quite sure what you mean by auto bite and run system, are you talking about baitrunner reels? You don't really need this for Changi drifting, drifting itself does help set the hook half the time but it's always good to have your hand on your rod to give it a good hard strike to ensure the better hook sets. Baitrunner has extra components which only adds more weight, so think through if you really need a baitrunner reel.
Another consideration you need to take account into is whether you want this set of tackles for only Changi water or able to cover other places as well such as Southern Islands. Generally, a PE1-3 rod with Shimano 4k/Daiwa 3k will do nicely while PE2-4 Shimano 6k/Daiwa 4k for Southern Islands. The difference is mostly due to the depth and stronger current that requires your tackle to handle heavier sinkers. So while a heavier setup can cover more applications, the lighter setup can let you fish more comfortably (lighter in weight) in Changi area.
For rods, you might want to look into Golden Mean Earthshaker, Daiwa Monster Mesh, Shimano Jigwrex, all in range of $200 plus. For cheaper rods, you can look into Eupro rods, ATC Vortex or one of my favourite, the Penn Power Sea Ranger that only cost $50 dollars.
For reels, you might want to go look at Daiwa Exceler/Oceano/Phantom J, Shimano Aceration/Biomaster, ranging from $100 plus to $200 odd. For cheaper reels, you can look at Shimano Nasci and Aernos XT or Daiwa Revros MX .