✔ 最佳答案
Given your rather limited budget then I'd suggest the 50mm f1.8. It's a fast lens so good for lower light situations if flash is not allowed.
You could also invest in the 55-200mm for a bit of reach.
Both that and your kit lens will be fine for shots where there's plenty of light. They will struggle in low light though.
Consider adding a TTL compatible speedlight as well.