when doing street photography, best is to go light. furthermore, the 2 places you have selected are not easy to shoot in term of street photography. it is like what dennis has mentioned, these places will be deserted after office hours. nevertheless, u will still be able to shoot something out of it. apart from the mosque & thian hock keng temple, there is a small temple at the bend of amoy st, just beside the walkway leading up to ann siang hill park.