Hi Stephanie! Is there a reason you can't take your cats to Singapore with you? Yes, there's some paperwork involved, and they'd need to spend a bit of time in quarantine I believe, but it's all really quite do-able, and there are people in the Klang Valley who can help you through all the logistics.
I would strongly encourage you to contact Liz Tay at Scallywags Boarding Cattery in PJ. Liz can help you with the transportation logistics and care for the cats in the meantime. Her contact details are on her web site: http://www.scallywags-malaysia.com/ Good luck!