You will be fine then - two days/nights are just right for KL to see/look around. BTW, if you are interested in markets, check Petaling Street Market. I don't know if currently there is the same situation as several years ago, but then it was the prime destination to shop for fake (and good quality) branded handbags and watches.

Just make sure that if you wear backpack, you do wear it in front and none of your valuables are in (easily accessible) pockets.