Banquet hall.

Hey fellas

i am rounding ideas of side businesses to start in lahore. Currently my idea is circulating around starting a banquet hall as it is quite popular in pakistan and is a good life long investment. My questions are many but i will summarize them,

1.What are the best and not too expensive locations in lahore where a banquet hall will work wonders.
2.What is the cost of constructing a banquet hall.
3.Most importantly, do we buy a commercial plot and then only can we construct or can we rent a commercial plot and build on it.
4.What is the cost of maintaining a banquet hall and what are the risks in running it.
5.How much investment is needed in total to construct a 1-1.5 kanal banquet hall in a medium class area and upper class area if we intend on purchasing a plot?

if any of you are currently running a banquet hall, please let me know so i can meet you and we can discuss further.