Valima Arrangement In October 2013, Please Help

Dear Forum Members,

I will be going to be married at the end of October 2013. I would like to arrange valima reception for 450 guests and my budget is Rs. 500,000/-. Can you please guide about some good wedding lawns/halls in Karachi for holding valima in Rs. 500,000/-. Please tell me about the hall/lawn charges and decoration and food per head cost. I am living at Bahadurabad therefore my venue should be near to Bahadurabad.

Wasalam