Sri Lanka: Packing List

I decided to bring my backpack because I'm always more comfortable that way - don't have to struggle pulling around a suitcase. Plus it makes me pack lighter. It was a little easier packing for this trip compared to New Zealand, being summer and all, but I had to consider dressing a bit more conservatively than I normally would for Australian summer. So, my packing list:
-3 maxis, one a bit more formal for dinners
-3 pairs of knee length shorts, 1 shorter for beach towns
-6 tops
-2 pairs of casual shoes, 1 pair of joggers
-swimmers
-sunnies
-2 handbags, 1 smaller for walking
-and the other half of my backpack is full of toiletries. I'm not joking. Important things: strong insect repellant, sunscreen and dry shampoo so I don't have to wash my hair everyday.